TY  - CONF
AU  - Nefovska-Danilović, Marija
AU  - Racić, Vitomir
AU  - Milojević, Marija
AU  - Mišković, Zoran
AU  - Savatović, Siniša
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3408
AB  - Cross-laminated timber (CLT) floors have gained in popularity due to their outstanding strength,
aesthetic appeal, good fire resistance, and high level of prefabrication. However, due to their
high stiffness-to-weight ratio, CLT floors are highly susceptible to pedestrian-induced
vibrations. In design practice, vibration serviceability is usually assessed by assuming a floor as
a set of CLT panels with no inter-panel connections, which leads to overestimation of the
vibration response. In this paper, an experimental dynamic testing was carried out to identify
modal properties and pedestrian-induced response of two CLT floors with different number of
panels in a floor assembly. Influence of the inter-panel connections on the floor modal properties
and pedestrian-induced vibration response is particularly studied and discussed.
C3  - EURODYN 2023, XII International Conference on Structural Dynamics, 02-05 July 2023, Delft, The Netherlands
T1  - Experimental modal analysis of cross-laminated timber floors
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3408
ER  - 

@conference{
author = "Nefovska-Danilović, Marija and Racić, Vitomir and Milojević, Marija and Mišković, Zoran and Savatović, Siniša",
year = "2023",
abstract = "Cross-laminated timber (CLT) floors have gained in popularity due to their outstanding strength,
aesthetic appeal, good fire resistance, and high level of prefabrication. However, due to their
high stiffness-to-weight ratio, CLT floors are highly susceptible to pedestrian-induced
vibrations. In design practice, vibration serviceability is usually assessed by assuming a floor as
a set of CLT panels with no inter-panel connections, which leads to overestimation of the
vibration response. In this paper, an experimental dynamic testing was carried out to identify
modal properties and pedestrian-induced response of two CLT floors with different number of
panels in a floor assembly. Influence of the inter-panel connections on the floor modal properties
and pedestrian-induced vibration response is particularly studied and discussed.",
journal = "EURODYN 2023, XII International Conference on Structural Dynamics, 02-05 July 2023, Delft, The Netherlands",
title = "Experimental modal analysis of cross-laminated timber floors",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3408"
}

Nefovska-Danilović, M., Racić, V., Milojević, M., Mišković, Z.,& Savatović, S.. (2023). Experimental modal analysis of cross-laminated timber floors. in EURODYN 2023, XII International Conference on Structural Dynamics, 02-05 July 2023, Delft, The Netherlands.
https://hdl.handle.net/21.15107/rcub_grafar_3408

Nefovska-Danilović M, Racić V, Milojević M, Mišković Z, Savatović S. Experimental modal analysis of cross-laminated timber floors. in EURODYN 2023, XII International Conference on Structural Dynamics, 02-05 July 2023, Delft, The Netherlands. 2023;.
https://hdl.handle.net/21.15107/rcub_grafar_3408 .

Nefovska-Danilović, Marija, Racić, Vitomir, Milojević, Marija, Mišković, Zoran, Savatović, Siniša, "Experimental modal analysis of cross-laminated timber floors" in EURODYN 2023, XII International Conference on Structural Dynamics, 02-05 July 2023, Delft, The Netherlands (2023),
https://hdl.handle.net/21.15107/rcub_grafar_3408 .

TY  - CONF
AU  - Nefovska-Danilović, Marija
AU  - Racić, Vitomir
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3262
AB  - With advancements in structural modelling and construction techniques, contemporary footbridges have become increasingly susceptible to vibrations induced by human activities, such as walking, jogging and jumping.  This study aims to evaluate pedestrian-induced vibrations of a stress-ribbon footbridge. A three-dimensional finite element model of the footbridge was developed, considering nonlinear behavior of the structure and staged construction. Vibration serviceability assessment was carried out using HIVOSS design guidelines. Numerical modal analysis showed that the lateral modes of vibration cannot be excited in resonance by pedestrians walking. However, the footbridge is prone to vertical pedestrian-induced vibrations. The first torsional mode shape is the most critical. It can be excited in resonance by the first harmonic of the vertical pedestrian loading, yielding vibration response beyond the suggested acceleration limit in some extreme scenarios of pedestrian loading.
PB  - Department for Civil Engineering and Geodesy, Faculty of Technical Sciences, University of Novi sad
C3  - 16th International scientific conference Planning, design, construction and building renewal INDIS 2023, 16-17 November 2023
T1  - Vibration serviceability assessment of a stress-ribbon footbridge
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3262
ER  - 

@conference{
author = "Nefovska-Danilović, Marija and Racić, Vitomir",
year = "2023",
abstract = "With advancements in structural modelling and construction techniques, contemporary footbridges have become increasingly susceptible to vibrations induced by human activities, such as walking, jogging and jumping.  This study aims to evaluate pedestrian-induced vibrations of a stress-ribbon footbridge. A three-dimensional finite element model of the footbridge was developed, considering nonlinear behavior of the structure and staged construction. Vibration serviceability assessment was carried out using HIVOSS design guidelines. Numerical modal analysis showed that the lateral modes of vibration cannot be excited in resonance by pedestrians walking. However, the footbridge is prone to vertical pedestrian-induced vibrations. The first torsional mode shape is the most critical. It can be excited in resonance by the first harmonic of the vertical pedestrian loading, yielding vibration response beyond the suggested acceleration limit in some extreme scenarios of pedestrian loading.",
publisher = "Department for Civil Engineering and Geodesy, Faculty of Technical Sciences, University of Novi sad",
journal = "16th International scientific conference Planning, design, construction and building renewal INDIS 2023, 16-17 November 2023",
title = "Vibration serviceability assessment of a stress-ribbon footbridge",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3262"
}

Nefovska-Danilović, M.,& Racić, V.. (2023). Vibration serviceability assessment of a stress-ribbon footbridge. in 16th International scientific conference Planning, design, construction and building renewal INDIS 2023, 16-17 November 2023
Department for Civil Engineering and Geodesy, Faculty of Technical Sciences, University of Novi sad..
https://hdl.handle.net/21.15107/rcub_grafar_3262

Nefovska-Danilović M, Racić V. Vibration serviceability assessment of a stress-ribbon footbridge. in 16th International scientific conference Planning, design, construction and building renewal INDIS 2023, 16-17 November 2023. 2023;.
https://hdl.handle.net/21.15107/rcub_grafar_3262 .

Nefovska-Danilović, Marija, Racić, Vitomir, "Vibration serviceability assessment of a stress-ribbon footbridge" in 16th International scientific conference Planning, design, construction and building renewal INDIS 2023, 16-17 November 2023 (2023),
https://hdl.handle.net/21.15107/rcub_grafar_3262 .

TY  - CONF
AU  - Racić, Vitomir
AU  - Nefovska-Danilović, Marija
AU  - Milojević, Marija
AU  - Marjanović, Miroslav
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3187
AB  - Cross-laminated timber (CLT) floors are typically composed of prefabricated CLT panels assembled on a construction site. The actual connections are commonly disregarded at design stage. CLT floors are modelled either as a monolithic slab or more frequently as a collection of CLT panels with no connections. This paper presents a numerical study designed to demonstrate the effect of two common inter-panel connections, i.e. single surface spline and half-lapped joint, on vibration modes of various CLT floor configurations. The inter-panel connections are modelled as an equivalent 2D elastic strip between the CLT panels. This uncomplicated yet robust approximation of reality can be used readily in design practice, regardless finite element (FE) software used to determine modal properties of a floor. The corresponding monolithic floors and those without inter-panel connections are studied for comparison. The results showed that the common practice of modelling CLT floors either as monolithic slabs or as a set of independent panels should come to an end.
C3  - International Conference on Experimental Vibration Analysis for Civil Engineering Structures EVACE, Politecnico di Milano, Italy, August 30 – September 1, 2023S 2023
T1  - Effect of Inter-panel Connections on Modal Properties of Cross-Laminated Timber Floors
EP  - 598
SP  - 589
DO  - 10.1007/978-3-031-39109-5_60
ER  - 

@conference{
author = "Racić, Vitomir and Nefovska-Danilović, Marija and Milojević, Marija and Marjanović, Miroslav",
year = "2023",
abstract = "Cross-laminated timber (CLT) floors are typically composed of prefabricated CLT panels assembled on a construction site. The actual connections are commonly disregarded at design stage. CLT floors are modelled either as a monolithic slab or more frequently as a collection of CLT panels with no connections. This paper presents a numerical study designed to demonstrate the effect of two common inter-panel connections, i.e. single surface spline and half-lapped joint, on vibration modes of various CLT floor configurations. The inter-panel connections are modelled as an equivalent 2D elastic strip between the CLT panels. This uncomplicated yet robust approximation of reality can be used readily in design practice, regardless finite element (FE) software used to determine modal properties of a floor. The corresponding monolithic floors and those without inter-panel connections are studied for comparison. The results showed that the common practice of modelling CLT floors either as monolithic slabs or as a set of independent panels should come to an end.",
journal = "International Conference on Experimental Vibration Analysis for Civil Engineering Structures EVACE, Politecnico di Milano, Italy, August 30 – September 1, 2023S 2023",
title = "Effect of Inter-panel Connections on Modal Properties of Cross-Laminated Timber Floors",
pages = "598-589",
doi = "10.1007/978-3-031-39109-5_60"
}

Racić, V., Nefovska-Danilović, M., Milojević, M.,& Marjanović, M.. (2023). Effect of Inter-panel Connections on Modal Properties of Cross-Laminated Timber Floors. in International Conference on Experimental Vibration Analysis for Civil Engineering Structures EVACE, Politecnico di Milano, Italy, August 30 – September 1, 2023S 2023, 589-598.
https://doi.org/10.1007/978-3-031-39109-5_60

Racić V, Nefovska-Danilović M, Milojević M, Marjanović M. Effect of Inter-panel Connections on Modal Properties of Cross-Laminated Timber Floors. in International Conference on Experimental Vibration Analysis for Civil Engineering Structures EVACE, Politecnico di Milano, Italy, August 30 – September 1, 2023S 2023. 2023;:589-598.
doi:10.1007/978-3-031-39109-5_60 .

Racić, Vitomir, Nefovska-Danilović, Marija, Milojević, Marija, Marjanović, Miroslav, "Effect of Inter-panel Connections on Modal Properties of Cross-Laminated Timber Floors" in International Conference on Experimental Vibration Analysis for Civil Engineering Structures EVACE, Politecnico di Milano, Italy, August 30 – September 1, 2023S 2023 (2023):589-598,
https://doi.org/10.1007/978-3-031-39109-5_60 . .

TY  - JOUR
AU  - Milojević, Marija
AU  - Racić, Vitomir
AU  - Marjanović, Miroslav
AU  - Nefovska-Danilović, Marija
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2923
AB  - Long-span cross-laminated timber (CLT) floors are typically an assembly of prefabricated CLT panels connected together on the site. The actual connections are commonly neglected in design calculations. Hence, a CLT floor is modelled either as a monolith slab or more frequently as a set of CLT panels with no connections at all. This paper presents a numerical study designed to examine the influence of two most common inter-panel connections , i.e. single surface spline and half-lapped joint, on vibration modes and vibration responses of a range of different CLT floors due to pedestrian-induced loading. Although the inter-panel connections are relatively complex in reality, they are modelled here as an equivalent 2D elastic strip between the CLT panels. This relatively simple yet robust model can be used with ease in design practice, regardless finite element (FE) software used to extract vibration modes of a CLT floor. The corresponding monolith floors and floors without inter-panel connections are studied for the comparison of the results. Vertical vibration responses are simulated for low-frequency and high-frequency floors using the corresponding walking force models given in a popular design guideline for footfall induced vibrations of civil engineering structures. Vibration responses were calculated for single pedestrian occupants and their walking paths parallel and perpendicular to the line of connection. The results showed that including the inter-panel connections in a FE model resulted in up to 2.5 higher RMS acceleration levels. Hence, the common practice of modelling CLT floors as monolith slabs or as a set of panels without connections should be left behind.
T2  - Engineering Structures
T1  - Influence of inter-panel connections on vibration response of CLT floors due to pedestrian-induced loading
VL  - 277
DO  - 10.1016/j.engstruct.2022.115432
ER  - 

@article{
author = "Milojević, Marija and Racić, Vitomir and Marjanović, Miroslav and Nefovska-Danilović, Marija",
year = "2023",
abstract = "Long-span cross-laminated timber (CLT) floors are typically an assembly of prefabricated CLT panels connected together on the site. The actual connections are commonly neglected in design calculations. Hence, a CLT floor is modelled either as a monolith slab or more frequently as a set of CLT panels with no connections at all. This paper presents a numerical study designed to examine the influence of two most common inter-panel connections , i.e. single surface spline and half-lapped joint, on vibration modes and vibration responses of a range of different CLT floors due to pedestrian-induced loading. Although the inter-panel connections are relatively complex in reality, they are modelled here as an equivalent 2D elastic strip between the CLT panels. This relatively simple yet robust model can be used with ease in design practice, regardless finite element (FE) software used to extract vibration modes of a CLT floor. The corresponding monolith floors and floors without inter-panel connections are studied for the comparison of the results. Vertical vibration responses are simulated for low-frequency and high-frequency floors using the corresponding walking force models given in a popular design guideline for footfall induced vibrations of civil engineering structures. Vibration responses were calculated for single pedestrian occupants and their walking paths parallel and perpendicular to the line of connection. The results showed that including the inter-panel connections in a FE model resulted in up to 2.5 higher RMS acceleration levels. Hence, the common practice of modelling CLT floors as monolith slabs or as a set of panels without connections should be left behind.",
journal = "Engineering Structures",
title = "Influence of inter-panel connections on vibration response of CLT floors due to pedestrian-induced loading",
volume = "277",
doi = "10.1016/j.engstruct.2022.115432"
}

Milojević, M., Racić, V., Marjanović, M.,& Nefovska-Danilović, M.. (2023). Influence of inter-panel connections on vibration response of CLT floors due to pedestrian-induced loading. in Engineering Structures, 277.
https://doi.org/10.1016/j.engstruct.2022.115432

Milojević M, Racić V, Marjanović M, Nefovska-Danilović M. Influence of inter-panel connections on vibration response of CLT floors due to pedestrian-induced loading. in Engineering Structures. 2023;277.
doi:10.1016/j.engstruct.2022.115432 .

Milojević, Marija, Racić, Vitomir, Marjanović, Miroslav, Nefovska-Danilović, Marija, "Influence of inter-panel connections on vibration response of CLT floors due to pedestrian-induced loading" in Engineering Structures, 277 (2023),
https://doi.org/10.1016/j.engstruct.2022.115432 . .

TY  - JOUR
AU  - Mirković, Nikola
AU  - Nefovska-Danilović, Marija
AU  - Ahac, Maja
AU  - Lakušić, Stjepan
AU  - Mirković, Uroš
AU  - Zafirovski, Zlatko
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3162
AB  - Additional temperature stresses in continuously welded rails (CWRs) are caused by track/bridge interaction (TBI) due to thermal actions. Exceeding permissible stresses in CWRs on the bridge can lead to track buckling or rail cracking, compromising the safety of railway traffic. The main aim of the conducted study is to determine the effects of the key parameters such as rail cross-sectional area, track longitudinal resistance, bridge expansion length, and longitudinal stiffness of the fixed bridge support on the reduction of additional temperature stresses in CWRs on steel truss railway bridges. To quantify the effects of these parameters, two steel railway bridges with CWRs and the maximum expansion lengths according to UIC Code 774-3 were analyzed: (1) simply supported truss bridge with expansion length of 60 m and (2) continuous truss bridge with expansion lengths of 2 × 60 m. According to the obtained results, the track longitudinal resistance had the most significant impact on additional temperature stresses in CWRs, leading to their reduction of up to 72%. The bridge expansion length and the rail cross-sectional area led to reductions of up to 25% and up to 18%, respectively. Considering the deformation criteria of TBI, the longitudinal stiffness of the fixed bridge support had a minor effect on the reduction of additional temperature stresses in CWRs.
PB  - MDPI (Basel, Switzerland)
T2  - Buildings
T1  - Parametric Study of Additional Temperature Stresses in Continuously Welded Rails on Steel Truss Railway Bridges
IS  - 9: 2296
VL  - 13
DO  - 10.3390/buildings13092296
ER  - 

@article{
author = "Mirković, Nikola and Nefovska-Danilović, Marija and Ahac, Maja and Lakušić, Stjepan and Mirković, Uroš and Zafirovski, Zlatko",
year = "2023",
abstract = "Additional temperature stresses in continuously welded rails (CWRs) are caused by track/bridge interaction (TBI) due to thermal actions. Exceeding permissible stresses in CWRs on the bridge can lead to track buckling or rail cracking, compromising the safety of railway traffic. The main aim of the conducted study is to determine the effects of the key parameters such as rail cross-sectional area, track longitudinal resistance, bridge expansion length, and longitudinal stiffness of the fixed bridge support on the reduction of additional temperature stresses in CWRs on steel truss railway bridges. To quantify the effects of these parameters, two steel railway bridges with CWRs and the maximum expansion lengths according to UIC Code 774-3 were analyzed: (1) simply supported truss bridge with expansion length of 60 m and (2) continuous truss bridge with expansion lengths of 2 × 60 m. According to the obtained results, the track longitudinal resistance had the most significant impact on additional temperature stresses in CWRs, leading to their reduction of up to 72%. The bridge expansion length and the rail cross-sectional area led to reductions of up to 25% and up to 18%, respectively. Considering the deformation criteria of TBI, the longitudinal stiffness of the fixed bridge support had a minor effect on the reduction of additional temperature stresses in CWRs.",
publisher = "MDPI (Basel, Switzerland)",
journal = "Buildings",
title = "Parametric Study of Additional Temperature Stresses in Continuously Welded Rails on Steel Truss Railway Bridges",
number = "9: 2296",
volume = "13",
doi = "10.3390/buildings13092296"
}

Mirković, N., Nefovska-Danilović, M., Ahac, M., Lakušić, S., Mirković, U.,& Zafirovski, Z.. (2023). Parametric Study of Additional Temperature Stresses in Continuously Welded Rails on Steel Truss Railway Bridges. in Buildings
MDPI (Basel, Switzerland)., 13(9: 2296).
https://doi.org/10.3390/buildings13092296

Mirković N, Nefovska-Danilović M, Ahac M, Lakušić S, Mirković U, Zafirovski Z. Parametric Study of Additional Temperature Stresses in Continuously Welded Rails on Steel Truss Railway Bridges. in Buildings. 2023;13(9: 2296).
doi:10.3390/buildings13092296 .

Mirković, Nikola, Nefovska-Danilović, Marija, Ahac, Maja, Lakušić, Stjepan, Mirković, Uroš, Zafirovski, Zlatko, "Parametric Study of Additional Temperature Stresses in Continuously Welded Rails on Steel Truss Railway Bridges" in Buildings, 13, no. 9: 2296 (2023),
https://doi.org/10.3390/buildings13092296 . .

TY  - CONF
AU  - Jočković, Miloš
AU  - Nefovska-Danilović, Marija
AU  - Borković, Aleksandar
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2820
AB  - Dynamic analysis of a spatially curved Bernoulli-Euler beam subjected to the moving load is considered in this paper. The isogeometric approach is used for the spatial discretization of the weak form of the equation of motion. Both the reference geometry and the solution space are represented using the same NURBS basis functions that guarantee an accurate description of beam’s centerline. The time integration is done by the explicit technique. The presented formulation is validated by the comparison with the existing results from the literature for the curved beam subjected to the constant load moving with the constant velocity.
AB  - У овом раду је приказана динамичка анализа просторне криволинијске Бернули-Ојлерове греде под утицајем покретног оптерећења. Изогеометријски приступ је примењен у циљу просторне дискретизације слабе форме једначина кретања греде. Овај приступ се базира на примени истих базних NURBS функцијa за описивање геометрије и кинематике криволинијске греде, чиме је омогућен тачан приказ системне линије греде. Временска интеграција једначина је извршена применом експлицитне методе. Приказана формулација је валидирана поређењем са резултатима из литературе за случај криволинијске греде оптерећене покретном силом константног интензитета и брзине.
PB  - University of Banja Luka Faculty of Architecture, Civil Engineering and Geodesy
C3  - Proceedings of international conference on contemporary theory and practice in construction XV
T1  - Isogeometric analysis of a spatially curved Bernoulli-Euler beam subjected to moving load
T1  - Изогеметријска анализа утицаја покрентог оптерећења на просторној криволинијској Бернули-Ојлеровој греди
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2820
ER  - 

@conference{
author = "Jočković, Miloš and Nefovska-Danilović, Marija and Borković, Aleksandar",
year = "2022",
abstract = "Dynamic analysis of a spatially curved Bernoulli-Euler beam subjected to the moving load is considered in this paper. The isogeometric approach is used for the spatial discretization of the weak form of the equation of motion. Both the reference geometry and the solution space are represented using the same NURBS basis functions that guarantee an accurate description of beam’s centerline. The time integration is done by the explicit technique. The presented formulation is validated by the comparison with the existing results from the literature for the curved beam subjected to the constant load moving with the constant velocity., У овом раду је приказана динамичка анализа просторне криволинијске Бернули-Ојлерове греде под утицајем покретног оптерећења. Изогеометријски приступ је примењен у циљу просторне дискретизације слабе форме једначина кретања греде. Овај приступ се базира на примени истих базних NURBS функцијa за описивање геометрије и кинематике криволинијске греде, чиме је омогућен тачан приказ системне линије греде. Временска интеграција једначина је извршена применом експлицитне методе. Приказана формулација је валидирана поређењем са резултатима из литературе за случај криволинијске греде оптерећене покретном силом константног интензитета и брзине.",
publisher = "University of Banja Luka Faculty of Architecture, Civil Engineering and Geodesy",
journal = "Proceedings of international conference on contemporary theory and practice in construction XV",
title = "Isogeometric analysis of a spatially curved Bernoulli-Euler beam subjected to moving load, Изогеметријска анализа утицаја покрентог оптерећења на просторној криволинијској Бернули-Ојлеровој греди",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2820"
}

Jočković, M., Nefovska-Danilović, M.,& Borković, A.. (2022). Isogeometric analysis of a spatially curved Bernoulli-Euler beam subjected to moving load. in Proceedings of international conference on contemporary theory and practice in construction XV
University of Banja Luka Faculty of Architecture, Civil Engineering and Geodesy..
https://hdl.handle.net/21.15107/rcub_grafar_2820

Jočković M, Nefovska-Danilović M, Borković A. Isogeometric analysis of a spatially curved Bernoulli-Euler beam subjected to moving load. in Proceedings of international conference on contemporary theory and practice in construction XV. 2022;.
https://hdl.handle.net/21.15107/rcub_grafar_2820 .

Jočković, Miloš, Nefovska-Danilović, Marija, Borković, Aleksandar, "Isogeometric analysis of a spatially curved Bernoulli-Euler beam subjected to moving load" in Proceedings of international conference on contemporary theory and practice in construction XV (2022),
https://hdl.handle.net/21.15107/rcub_grafar_2820 .

TY  - CONF
AU  - Milojević, Marija
AU  - Ljaljević, Strahinja
AU  - Racić, Vitomir
AU  - Marjanović, Miroslav
AU  - Nefovska-Danilović, Marija
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2717
AB  - Trends in contemporary architecture towards open-plan spaces in commercial and residential
buildings have created problems with excessive vibrations of large-span floors induced by active
people. Solving vibration serviceability problems of as-built structures is costly and time-consuming.
Therefore, such a problem is the most efficiently and economically addressed at the
design stage. This paper presents software developed by the authors for assessing pedestrian-induced
vibrations of floors. The software is designed as a user-friendly graphical interface that
could be utilised in everyday design practice.
AB  - Trendovi u savremenoj arhitekturi, koji diktiraju projektovanje komercijalnih i stambenih zgrada
sa otvorenim prostorom, prouzrokovali su problem prekomernih vibracija međuspratnih
konstrukcija velikih raspona usled aktivnosti ljudi koji se po njima kreću. Saniranje prekomernih
vibracija već izgrađenih konstrukcija je skupo i vremenski zahtevno. Zbog toga je najefikasnije
i najekonomičnije ovaj problem eliminisati već u fazi projektovanja. U radu je predstavljen
softver za procenu vibracija međuspratnih konstrukcija izazvanih pešačkim opterećenjem,
jednostavnog grafičkog okruženja i pogodan za svakodnevnu upotrebu u projektovanju.
PB  - Association of Structural Engineers of Serbia
C3  - 16th Congress hosted by Association of Structural Engineers of Serbia
T1  - Software for calculation of pedestrian-induced vibration of floors
T1  - Softver za proračun vibracija međuspratnih konstrukcija usled dinamičke sile pešaka
EP  - 265
SP  - 256
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2717
ER  - 

@conference{
author = "Milojević, Marija and Ljaljević, Strahinja and Racić, Vitomir and Marjanović, Miroslav and Nefovska-Danilović, Marija",
year = "2022",
abstract = "Trends in contemporary architecture towards open-plan spaces in commercial and residential
buildings have created problems with excessive vibrations of large-span floors induced by active
people. Solving vibration serviceability problems of as-built structures is costly and time-consuming.
Therefore, such a problem is the most efficiently and economically addressed at the
design stage. This paper presents software developed by the authors for assessing pedestrian-induced
vibrations of floors. The software is designed as a user-friendly graphical interface that
could be utilised in everyday design practice., Trendovi u savremenoj arhitekturi, koji diktiraju projektovanje komercijalnih i stambenih zgrada
sa otvorenim prostorom, prouzrokovali su problem prekomernih vibracija međuspratnih
konstrukcija velikih raspona usled aktivnosti ljudi koji se po njima kreću. Saniranje prekomernih
vibracija već izgrađenih konstrukcija je skupo i vremenski zahtevno. Zbog toga je najefikasnije
i najekonomičnije ovaj problem eliminisati već u fazi projektovanja. U radu je predstavljen
softver za procenu vibracija međuspratnih konstrukcija izazvanih pešačkim opterećenjem,
jednostavnog grafičkog okruženja i pogodan za svakodnevnu upotrebu u projektovanju.",
publisher = "Association of Structural Engineers of Serbia",
journal = "16th Congress hosted by Association of Structural Engineers of Serbia",
title = "Software for calculation of pedestrian-induced vibration of floors, Softver za proračun vibracija međuspratnih konstrukcija usled dinamičke sile pešaka",
pages = "265-256",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2717"
}

Milojević, M., Ljaljević, S., Racić, V., Marjanović, M.,& Nefovska-Danilović, M.. (2022). Software for calculation of pedestrian-induced vibration of floors. in 16th Congress hosted by Association of Structural Engineers of Serbia
Association of Structural Engineers of Serbia., 256-265.
https://hdl.handle.net/21.15107/rcub_grafar_2717

Milojević M, Ljaljević S, Racić V, Marjanović M, Nefovska-Danilović M. Software for calculation of pedestrian-induced vibration of floors. in 16th Congress hosted by Association of Structural Engineers of Serbia. 2022;:256-265.
https://hdl.handle.net/21.15107/rcub_grafar_2717 .

Milojević, Marija, Ljaljević, Strahinja, Racić, Vitomir, Marjanović, Miroslav, Nefovska-Danilović, Marija, "Software for calculation of pedestrian-induced vibration of floors" in 16th Congress hosted by Association of Structural Engineers of Serbia (2022):256-265,
https://hdl.handle.net/21.15107/rcub_grafar_2717 .

TY  - CONF
AU  - Vidović, Milica
AU  - Nefovska-Danilović, Marija
AU  - Radišić, Marko
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2797
AB  - As a result of rapid development of cities and construction of high-speed rail/road infrastructure, vibration serviceability of buildings due to traffic-induced vibrations has become a growing issue that affects the comfort of living and health of building occupants. In this paper a numerical study in which the influence of soil stiffness on the traffic-induced vibrations of an eight-story residential building is investigated considering soil-structure interaction and applying the substructuring approach and transfer function method. The results are presented in terms of transfer functions for selected points of interests inside the building. The results show that the resonant response of the structure occurs at lower frequencies for soft soil and at higher frequencies for stiff soil, indicating that soil-structure interaction can significantly affect the vibration response of the building.
PB  - Association of Structural Engineers of Serbia
C3  - 16th International Congress Proceeding
T1  - Assessment of traffic-induced building vibrations using Transfer function method
EP  - 240
SP  - 229
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2797
ER  - 

@conference{
author = "Vidović, Milica and Nefovska-Danilović, Marija and Radišić, Marko",
year = "2022",
abstract = "As a result of rapid development of cities and construction of high-speed rail/road infrastructure, vibration serviceability of buildings due to traffic-induced vibrations has become a growing issue that affects the comfort of living and health of building occupants. In this paper a numerical study in which the influence of soil stiffness on the traffic-induced vibrations of an eight-story residential building is investigated considering soil-structure interaction and applying the substructuring approach and transfer function method. The results are presented in terms of transfer functions for selected points of interests inside the building. The results show that the resonant response of the structure occurs at lower frequencies for soft soil and at higher frequencies for stiff soil, indicating that soil-structure interaction can significantly affect the vibration response of the building.",
publisher = "Association of Structural Engineers of Serbia",
journal = "16th International Congress Proceeding",
title = "Assessment of traffic-induced building vibrations using Transfer function method",
pages = "240-229",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2797"
}

Vidović, M., Nefovska-Danilović, M.,& Radišić, M.. (2022). Assessment of traffic-induced building vibrations using Transfer function method. in 16th International Congress Proceeding
Association of Structural Engineers of Serbia., 229-240.
https://hdl.handle.net/21.15107/rcub_grafar_2797

Vidović M, Nefovska-Danilović M, Radišić M. Assessment of traffic-induced building vibrations using Transfer function method. in 16th International Congress Proceeding. 2022;:229-240.
https://hdl.handle.net/21.15107/rcub_grafar_2797 .

Vidović, Milica, Nefovska-Danilović, Marija, Radišić, Marko, "Assessment of traffic-induced building vibrations using Transfer function method" in 16th International Congress Proceeding (2022):229-240,
https://hdl.handle.net/21.15107/rcub_grafar_2797 .

TY  - JOUR
AU  - Jočković, Miloš
AU  - Nefovska-Danilović, Marija
AU  - Borković, Aleksandar
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2928
AB  - This paper considers the dynamic analysis of a spatially curved Bernoulli-Euler beam subjected to a moving load. The isogeometric approach is used for the spatial discretization of the weak form of the equation of motion. Both the reference geometry and the solution space are represented using the same NURBS basis functions that guarantee an accurate description of the beam centerline. The time integration is done by the explicit technique. The presented formulation is validated by the comparison with the existing results from the literature for the curved beam subjected to a constant load moving with a constant velocity. In addition, the influence of the moving load velocity on the dynamic response of a spatially curved beam has been investigated.
AB  - У овом раду је приказана динамичка анализа просторне криволинијске Бернули-Ојлерове греде под утицајем покретног оптерећења. Изогеометријски приступ је примењен у циљу просторне дискретизације слабе форме једначина кретања греде. Овај приступ се базира на примени истих базних NURBS функцијa за описивање геометрије и кинематике криволинијске греде, чиме је омогућен тачан приказ системне линије греде. Временска интеграција једначина је извршена применом експлицитне методе. Приказана формулација је валидирана поређењем са резултатима из литературе за случај криволинијске греде оптерећене покретном силом константног интензитета и брзине. Такође је извршена и анализа утицаја брзине кретања покрене силе на динамички одговор просторне криволинијске греде.
T2  - AGG+ Journal for Architecture, Civil Engineering, Geodesy and Related Scientific Fields
T1  - Linear dynamic analysis of a spatially curved Bernoulli-Euler beam subjected to a moving load
T1  - Линеарна динамичка анализа утицаја покретног оптерећења на просторној криволинијској Бернули-Ојлеровој греди
VL  - 10
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2928
ER  - 

@article{
author = "Jočković, Miloš and Nefovska-Danilović, Marija and Borković, Aleksandar",
year = "2022",
abstract = "This paper considers the dynamic analysis of a spatially curved Bernoulli-Euler beam subjected to a moving load. The isogeometric approach is used for the spatial discretization of the weak form of the equation of motion. Both the reference geometry and the solution space are represented using the same NURBS basis functions that guarantee an accurate description of the beam centerline. The time integration is done by the explicit technique. The presented formulation is validated by the comparison with the existing results from the literature for the curved beam subjected to a constant load moving with a constant velocity. In addition, the influence of the moving load velocity on the dynamic response of a spatially curved beam has been investigated., У овом раду је приказана динамичка анализа просторне криволинијске Бернули-Ојлерове греде под утицајем покретног оптерећења. Изогеометријски приступ је примењен у циљу просторне дискретизације слабе форме једначина кретања греде. Овај приступ се базира на примени истих базних NURBS функцијa за описивање геометрије и кинематике криволинијске греде, чиме је омогућен тачан приказ системне линије греде. Временска интеграција једначина је извршена применом експлицитне методе. Приказана формулација је валидирана поређењем са резултатима из литературе за случај криволинијске греде оптерећене покретном силом константног интензитета и брзине. Такође је извршена и анализа утицаја брзине кретања покрене силе на динамички одговор просторне криволинијске греде.",
journal = "AGG+ Journal for Architecture, Civil Engineering, Geodesy and Related Scientific Fields",
title = "Linear dynamic analysis of a spatially curved Bernoulli-Euler beam subjected to a moving load, Линеарна динамичка анализа утицаја покретног оптерећења на просторној криволинијској Бернули-Ојлеровој греди",
volume = "10",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2928"
}

Jočković, M., Nefovska-Danilović, M.,& Borković, A.. (2022). Linear dynamic analysis of a spatially curved Bernoulli-Euler beam subjected to a moving load. in AGG+ Journal for Architecture, Civil Engineering, Geodesy and Related Scientific Fields, 10.
https://hdl.handle.net/21.15107/rcub_grafar_2928

Jočković M, Nefovska-Danilović M, Borković A. Linear dynamic analysis of a spatially curved Bernoulli-Euler beam subjected to a moving load. in AGG+ Journal for Architecture, Civil Engineering, Geodesy and Related Scientific Fields. 2022;10.
https://hdl.handle.net/21.15107/rcub_grafar_2928 .

Jočković, Miloš, Nefovska-Danilović, Marija, Borković, Aleksandar, "Linear dynamic analysis of a spatially curved Bernoulli-Euler beam subjected to a moving load" in AGG+ Journal for Architecture, Civil Engineering, Geodesy and Related Scientific Fields, 10 (2022),
https://hdl.handle.net/21.15107/rcub_grafar_2928 .

TY  - CONF
AU  - Kolarević, Nevenka
AU  - Nefovska-Danilović, Marija
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2768
AB  - U ovom radu primenjena je metoda dinamičke krutosti za analizu slobodnih vibracija sistema koji se sastoji od kružne cilindrične ljuske i kružnih i/ili prstenastih ploča. Pri formulaciji dinamičkih matrica krutosti korišćena je Flügge-ove teorija ljuski, kao i Kirchoff-ova teorija tankih ploča. Na osnovu razvijenog programa u Matlab okruženju, urađeno je nekoliko numeričkih primera. Rezultati za sopstvene frekvencije dobijeni primenom metode dinamičke krutosti upoređeni su sa rezultatima dobijenim pomoću komercijalnog programa Abaqus zasnovanog na metodi konačnih elemenata.
AB  - In this paper, the dynamic stiffness method is used for the free vibration analysis of assemblies built up of circular cylindrical shells and circular and/or annular plates. Flügge's shell theory as well as Kirchoff's theory of thin plates were used in the formulation of dynamic stiffness matrices. Based on the Matlab code, developed for this particular purpose, several numerical examples were presented. The results for natural frequencies obtained using the dynamic stiffness method are compared with the results obtained using the commercial finite element method - based software Abaqus.
PB  - Univerzitet u Beogradu Građevinski fakultet Beograd
PB  - Društvo građevinskih konstruktera Srbije
C3  - 16th Congress hosted by Association of Structural Engineers of Serbia, 2022
T1  - Slobodne vibracije rotaciono-simetričnih sistema primenom metode dinamičke krutosti
T1  - Free vibration study of axisymmetric assemblies using dynamic stiffness method
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2768
ER  - 

@conference{
author = "Kolarević, Nevenka and Nefovska-Danilović, Marija",
year = "2022",
abstract = "U ovom radu primenjena je metoda dinamičke krutosti za analizu slobodnih vibracija sistema koji se sastoji od kružne cilindrične ljuske i kružnih i/ili prstenastih ploča. Pri formulaciji dinamičkih matrica krutosti korišćena je Flügge-ove teorija ljuski, kao i Kirchoff-ova teorija tankih ploča. Na osnovu razvijenog programa u Matlab okruženju, urađeno je nekoliko numeričkih primera. Rezultati za sopstvene frekvencije dobijeni primenom metode dinamičke krutosti upoređeni su sa rezultatima dobijenim pomoću komercijalnog programa Abaqus zasnovanog na metodi konačnih elemenata., In this paper, the dynamic stiffness method is used for the free vibration analysis of assemblies built up of circular cylindrical shells and circular and/or annular plates. Flügge's shell theory as well as Kirchoff's theory of thin plates were used in the formulation of dynamic stiffness matrices. Based on the Matlab code, developed for this particular purpose, several numerical examples were presented. The results for natural frequencies obtained using the dynamic stiffness method are compared with the results obtained using the commercial finite element method - based software Abaqus.",
publisher = "Univerzitet u Beogradu Građevinski fakultet Beograd, Društvo građevinskih konstruktera Srbije",
journal = "16th Congress hosted by Association of Structural Engineers of Serbia, 2022",
title = "Slobodne vibracije rotaciono-simetričnih sistema primenom metode dinamičke krutosti, Free vibration study of axisymmetric assemblies using dynamic stiffness method",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2768"
}

Kolarević, N.,& Nefovska-Danilović, M.. (2022). Slobodne vibracije rotaciono-simetričnih sistema primenom metode dinamičke krutosti. in 16th Congress hosted by Association of Structural Engineers of Serbia, 2022
Univerzitet u Beogradu Građevinski fakultet Beograd..
https://hdl.handle.net/21.15107/rcub_grafar_2768

Kolarević N, Nefovska-Danilović M. Slobodne vibracije rotaciono-simetričnih sistema primenom metode dinamičke krutosti. in 16th Congress hosted by Association of Structural Engineers of Serbia, 2022. 2022;.
https://hdl.handle.net/21.15107/rcub_grafar_2768 .

Kolarević, Nevenka, Nefovska-Danilović, Marija, "Slobodne vibracije rotaciono-simetričnih sistema primenom metode dinamičke krutosti" in 16th Congress hosted by Association of Structural Engineers of Serbia, 2022 (2022),
https://hdl.handle.net/21.15107/rcub_grafar_2768 .

TY  - JOUR
AU  - Milojević, Marija
AU  - Damnjanović, Emilija
AU  - Nefovska-Danilović, Marija
AU  - Marjanović, Miroslav
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2399
AB  - Variety of wood species and complexity of their structure make the reliable material properties of cross-laminated timber (CLT) difficult to obtain, which can lead to inaccurate prediction of CLT behavior. Due to high stiffness-to-weight ratio, CLT floors can suffer from vibration serviceability issues. This paper aims to quantify the uncertainties induced by material properties and investigate their effect on vibration performance of CLT floors. Analysis based on Monte Carlo simulations, considering material properties as random variables, is developed. Based on the conducted analysis, appropriate conclusions have been derived.
PB  - Society for Materials and Structures Testing of Serbia, Belgrade
PB  - University of Belgrade Faculty of Civil Engineering
PB  - Association of Structural Engineers of Serbia
T2  - Gradjevinski materijali i konstrukcije
T1  - Effects of material uncertainties on vibration performance cross laminated timber floors
EP  - 157
IS  - 3
SP  - 153
VL  - 64
DO  - 10.5937/grmk2103153M
ER  - 

@article{
author = "Milojević, Marija and Damnjanović, Emilija and Nefovska-Danilović, Marija and Marjanović, Miroslav",
year = "2021",
abstract = "Variety of wood species and complexity of their structure make the reliable material properties of cross-laminated timber (CLT) difficult to obtain, which can lead to inaccurate prediction of CLT behavior. Due to high stiffness-to-weight ratio, CLT floors can suffer from vibration serviceability issues. This paper aims to quantify the uncertainties induced by material properties and investigate their effect on vibration performance of CLT floors. Analysis based on Monte Carlo simulations, considering material properties as random variables, is developed. Based on the conducted analysis, appropriate conclusions have been derived.",
publisher = "Society for Materials and Structures Testing of Serbia, Belgrade, University of Belgrade Faculty of Civil Engineering, Association of Structural Engineers of Serbia",
journal = "Gradjevinski materijali i konstrukcije",
title = "Effects of material uncertainties on vibration performance cross laminated timber floors",
pages = "157-153",
number = "3",
volume = "64",
doi = "10.5937/grmk2103153M"
}

Milojević, M., Damnjanović, E., Nefovska-Danilović, M.,& Marjanović, M.. (2021). Effects of material uncertainties on vibration performance cross laminated timber floors. in Gradjevinski materijali i konstrukcije
Society for Materials and Structures Testing of Serbia, Belgrade., 64(3), 153-157.
https://doi.org/10.5937/grmk2103153M

Milojević M, Damnjanović E, Nefovska-Danilović M, Marjanović M. Effects of material uncertainties on vibration performance cross laminated timber floors. in Gradjevinski materijali i konstrukcije. 2021;64(3):153-157.
doi:10.5937/grmk2103153M .

Milojević, Marija, Damnjanović, Emilija, Nefovska-Danilović, Marija, Marjanović, Miroslav, "Effects of material uncertainties on vibration performance cross laminated timber floors" in Gradjevinski materijali i konstrukcije, 64, no. 3 (2021):153-157,
https://doi.org/10.5937/grmk2103153M . .

TY  - CONF
AU  - Jočković, Miloš
AU  - Nefovska-Danilović, Marija
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2392
AB  - In this paper, linear transient analysis of spatial curved Bernoulli – Euler beam with circular cross – section formulated using isogeometric approach has been presented. The isogeometric approach is based on the concept that the geometry of the beam, as well as the displacement field are defined using the Non – Uniform Rational B – Spline (NURBS) functions. Governing equations of motions are derived using the basic relations of the differential geometry and continuum mechanics. In order to conduct transient analysis, time discretization has been employed using explicit integration scheme. The validation of the proposed method has been carried out for the spatial curved cantilever beam subjected to the point load with constant magnitude. The results of the free end displacements obtained using proposed method have shown excellent convergence properties and agreement with the results obtained using finite element-based software. In comparison to the conventional finite element method, less number of degrees of freedom are required in order to obtain accurate results.
PB  - Serbian Society of Mechanics
C3  - Proceedings of 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia, June 28-30, 2021
T1  - Linear transient analysis of spatial curved Bernoulli – Euler beam using isogeometric approach
EP  - 201
SP  - 194
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2392
ER  - 

@conference{
author = "Jočković, Miloš and Nefovska-Danilović, Marija",
year = "2021",
abstract = "In this paper, linear transient analysis of spatial curved Bernoulli – Euler beam with circular cross – section formulated using isogeometric approach has been presented. The isogeometric approach is based on the concept that the geometry of the beam, as well as the displacement field are defined using the Non – Uniform Rational B – Spline (NURBS) functions. Governing equations of motions are derived using the basic relations of the differential geometry and continuum mechanics. In order to conduct transient analysis, time discretization has been employed using explicit integration scheme. The validation of the proposed method has been carried out for the spatial curved cantilever beam subjected to the point load with constant magnitude. The results of the free end displacements obtained using proposed method have shown excellent convergence properties and agreement with the results obtained using finite element-based software. In comparison to the conventional finite element method, less number of degrees of freedom are required in order to obtain accurate results.",
publisher = "Serbian Society of Mechanics",
journal = "Proceedings of 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia, June 28-30, 2021",
title = "Linear transient analysis of spatial curved Bernoulli – Euler beam using isogeometric approach",
pages = "201-194",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2392"
}

Jočković, M.,& Nefovska-Danilović, M.. (2021). Linear transient analysis of spatial curved Bernoulli – Euler beam using isogeometric approach. in Proceedings of 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia, June 28-30, 2021
Serbian Society of Mechanics., 194-201.
https://hdl.handle.net/21.15107/rcub_grafar_2392

Jočković M, Nefovska-Danilović M. Linear transient analysis of spatial curved Bernoulli – Euler beam using isogeometric approach. in Proceedings of 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia, June 28-30, 2021. 2021;:194-201.
https://hdl.handle.net/21.15107/rcub_grafar_2392 .

Jočković, Miloš, Nefovska-Danilović, Marija, "Linear transient analysis of spatial curved Bernoulli – Euler beam using isogeometric approach" in Proceedings of 8th International Congress of Serbian Society of Mechanics, Kragujevac, Serbia, June 28-30, 2021 (2021):194-201,
https://hdl.handle.net/21.15107/rcub_grafar_2392 .

TY  - CONF
AU  - Milojević, Marija
AU  - Damnjanović, Emilija
AU  - Nefovska-Danilović, Marija
AU  - Marjanović, Miroslav
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2353
AB  - Variety of wood species and complexity of their structure make the reliable material properties of cross-laminated timber (CLT) difficult to obtain, which can lead to inaccurate prediction of CLT behavior. Due to high stiffness-to-weight ratio, CLT floors can suffer from vibration serviceability issues. This paper aims to quantify the uncertainties induced by material properties and investigate their effect on vibration performance of CLT floors. Analysis based on Monte Carlo simulations, considering material properties as random variables, is developed. Based on the conducted analysis, appropriate conclusions have been derived.
AB  - Raznolikost u vrstama drveta, kao i kompleksnost njegove strukture otežava pouzdanu procenu materijalnih karakteristika elemenata od unakrsno lameliranog drveta (CLT), što dovodi do nedovoljno tačnog predviđanja njihovog ponašanja. Problem koji se neretko javlja i narušava funkcionalnost CLT tavanica su vibracije. U ovom radu je izvršena analiza uticaja nepouzdanosti materijalnih karakteristika na vibracije CLT tavanica. Sprovedena je analiza zasnovana na Monte Karlo simulacijama, gde su karakteristike materijala usvojene kao slučajno promenljive veličine. Na osnovu dobijenih rezultata izvedeni su odgovarajući zaključci.
PB  - Univerzitet u Beogradu Građevinski fakultet
PB  - Društvo građevinskih konstruktera Srbije
C3  - 16th Congress hosted by Association of Structural Engineers of Serbia
T1  - Effects of material uncertainties on vibration performance cross laminated timber floors
T1  - Uticaj nepouzdanosti materijala na vibracije tavanica od unakrsno lameliranog drveta
EP  - 490
SP  - 483
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2353
ER  - 

@conference{
author = "Milojević, Marija and Damnjanović, Emilija and Nefovska-Danilović, Marija and Marjanović, Miroslav",
year = "2021",
abstract = "Variety of wood species and complexity of their structure make the reliable material properties of cross-laminated timber (CLT) difficult to obtain, which can lead to inaccurate prediction of CLT behavior. Due to high stiffness-to-weight ratio, CLT floors can suffer from vibration serviceability issues. This paper aims to quantify the uncertainties induced by material properties and investigate their effect on vibration performance of CLT floors. Analysis based on Monte Carlo simulations, considering material properties as random variables, is developed. Based on the conducted analysis, appropriate conclusions have been derived., Raznolikost u vrstama drveta, kao i kompleksnost njegove strukture otežava pouzdanu procenu materijalnih karakteristika elemenata od unakrsno lameliranog drveta (CLT), što dovodi do nedovoljno tačnog predviđanja njihovog ponašanja. Problem koji se neretko javlja i narušava funkcionalnost CLT tavanica su vibracije. U ovom radu je izvršena analiza uticaja nepouzdanosti materijalnih karakteristika na vibracije CLT tavanica. Sprovedena je analiza zasnovana na Monte Karlo simulacijama, gde su karakteristike materijala usvojene kao slučajno promenljive veličine. Na osnovu dobijenih rezultata izvedeni su odgovarajući zaključci.",
publisher = "Univerzitet u Beogradu Građevinski fakultet, Društvo građevinskih konstruktera Srbije",
journal = "16th Congress hosted by Association of Structural Engineers of Serbia",
title = "Effects of material uncertainties on vibration performance cross laminated timber floors, Uticaj nepouzdanosti materijala na vibracije tavanica od unakrsno lameliranog drveta",
pages = "490-483",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2353"
}

Milojević, M., Damnjanović, E., Nefovska-Danilović, M.,& Marjanović, M.. (2021). Effects of material uncertainties on vibration performance cross laminated timber floors. in 16th Congress hosted by Association of Structural Engineers of Serbia
Univerzitet u Beogradu Građevinski fakultet., 483-490.
https://hdl.handle.net/21.15107/rcub_grafar_2353

Milojević M, Damnjanović E, Nefovska-Danilović M, Marjanović M. Effects of material uncertainties on vibration performance cross laminated timber floors. in 16th Congress hosted by Association of Structural Engineers of Serbia. 2021;:483-490.
https://hdl.handle.net/21.15107/rcub_grafar_2353 .

Milojević, Marija, Damnjanović, Emilija, Nefovska-Danilović, Marija, Marjanović, Miroslav, "Effects of material uncertainties on vibration performance cross laminated timber floors" in 16th Congress hosted by Association of Structural Engineers of Serbia (2021):483-490,
https://hdl.handle.net/21.15107/rcub_grafar_2353 .

TY  - CONF
AU  - Marjanović, Miroslav
AU  - Jugović, Verica
AU  - Nefovska-Danilović, Marija
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2091
AB  - Cross-laminated timber (CLT) panels have an increasing market share and extensive application in civil engineering practice, as full size walls or floor structures. CLT provides a compelling alternative to the concrete and steel (as conventional building materials), providing a low carbon footprint and comfortable living conditions. However, the orthotropic elastic material behavior of wood and the crosswise lay-up yield a relatively complex kinematics of CLT, characterized by high shear deformation across the thickness. This complicates the appropriate and accurate kinematic description of CLT and further prolongs the design phase of the real engineering structure.

Due to the relatively low weight, CLT floors are particularly prone to human-induced vibrations, causing vibration serviceability issues such as annoyance to human occupants and dysfunction of vibration sensitive equipment. Therefore, for the accurate response prediction of CLT under dynamic loading, its fundamental dynamic properties should be derived first.

In the paper, dynamic stiffness-based FREEVIB software, previously developed by the authors, has been used for modeling and prediction of the free vibration characteristics of CLT floor structures. Frequency curves taking into account: (i) span-to-thickness (a/h) ratio, (ii) plate aspect (a/b) ratio and (iii) different combinations of end constraints, have been developed using FREEVIB and systematized to be easy for use in engineering practice, especially in the conceptual design phase of CLT-based buildings. The results have been compared against the current CLT design recommendations.
PB  - European Association for Structural Dynamics
C3  - XI International Conference on Structural Dynamics EURODYN 2020
T1  - Development of frequency curves for cross-laminated timber (CLT) floors using dynamic stiffness method
EP  - 509
SP  - 502
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2091
ER  - 

@conference{
author = "Marjanović, Miroslav and Jugović, Verica and Nefovska-Danilović, Marija",
year = "2020",
abstract = "Cross-laminated timber (CLT) panels have an increasing market share and extensive application in civil engineering practice, as full size walls or floor structures. CLT provides a compelling alternative to the concrete and steel (as conventional building materials), providing a low carbon footprint and comfortable living conditions. However, the orthotropic elastic material behavior of wood and the crosswise lay-up yield a relatively complex kinematics of CLT, characterized by high shear deformation across the thickness. This complicates the appropriate and accurate kinematic description of CLT and further prolongs the design phase of the real engineering structure.

Due to the relatively low weight, CLT floors are particularly prone to human-induced vibrations, causing vibration serviceability issues such as annoyance to human occupants and dysfunction of vibration sensitive equipment. Therefore, for the accurate response prediction of CLT under dynamic loading, its fundamental dynamic properties should be derived first.

In the paper, dynamic stiffness-based FREEVIB software, previously developed by the authors, has been used for modeling and prediction of the free vibration characteristics of CLT floor structures. Frequency curves taking into account: (i) span-to-thickness (a/h) ratio, (ii) plate aspect (a/b) ratio and (iii) different combinations of end constraints, have been developed using FREEVIB and systematized to be easy for use in engineering practice, especially in the conceptual design phase of CLT-based buildings. The results have been compared against the current CLT design recommendations.",
publisher = "European Association for Structural Dynamics",
journal = "XI International Conference on Structural Dynamics EURODYN 2020",
title = "Development of frequency curves for cross-laminated timber (CLT) floors using dynamic stiffness method",
pages = "509-502",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2091"
}

Marjanović, M., Jugović, V.,& Nefovska-Danilović, M.. (2020). Development of frequency curves for cross-laminated timber (CLT) floors using dynamic stiffness method. in XI International Conference on Structural Dynamics EURODYN 2020
European Association for Structural Dynamics., 1, 502-509.
https://hdl.handle.net/21.15107/rcub_grafar_2091

Marjanović M, Jugović V, Nefovska-Danilović M. Development of frequency curves for cross-laminated timber (CLT) floors using dynamic stiffness method. in XI International Conference on Structural Dynamics EURODYN 2020. 2020;1:502-509.
https://hdl.handle.net/21.15107/rcub_grafar_2091 .

Marjanović, Miroslav, Jugović, Verica, Nefovska-Danilović, Marija, "Development of frequency curves for cross-laminated timber (CLT) floors using dynamic stiffness method" in XI International Conference on Structural Dynamics EURODYN 2020, 1 (2020):502-509,
https://hdl.handle.net/21.15107/rcub_grafar_2091 .

TY  - JOUR
AU  - Kolarević, Nevenka
AU  - Nefovska-Danilović, Marija
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2054
AB  - In this paper, the dynamic stiffness method has been applied in the free vibration analysis of open circular cylindrical shells based on Flügge thin shell theory. The dynamic stiffness matrix for a completely free open cylindrical shell element has been derived and coded in MATLAB to compute the natural frequencies and mode shapes. The results of the numerical study have been compared with the results from the finite element analysis, as well as with the results from the literature. After a detailed convergence study, considering the number of terms in the proposed solution, applied boundary conditions and geometry, limitations and recommendations for application of the proposed method have been given.
PB  - Elsevier
T2  - Journal of Sound and Vibration
T1  - Dynamic stiffness – based free vibration study of open circular cylindrical shells
VL  - 486
DO  - 10.1016/j.jsv.2020.115600
ER  - 

@article{
author = "Kolarević, Nevenka and Nefovska-Danilović, Marija",
year = "2020",
abstract = "In this paper, the dynamic stiffness method has been applied in the free vibration analysis of open circular cylindrical shells based on Flügge thin shell theory. The dynamic stiffness matrix for a completely free open cylindrical shell element has been derived and coded in MATLAB to compute the natural frequencies and mode shapes. The results of the numerical study have been compared with the results from the finite element analysis, as well as with the results from the literature. After a detailed convergence study, considering the number of terms in the proposed solution, applied boundary conditions and geometry, limitations and recommendations for application of the proposed method have been given.",
publisher = "Elsevier",
journal = "Journal of Sound and Vibration",
title = "Dynamic stiffness – based free vibration study of open circular cylindrical shells",
volume = "486",
doi = "10.1016/j.jsv.2020.115600"
}

Kolarević, N.,& Nefovska-Danilović, M.. (2020). Dynamic stiffness – based free vibration study of open circular cylindrical shells. in Journal of Sound and Vibration
Elsevier., 486.
https://doi.org/10.1016/j.jsv.2020.115600

Kolarević N, Nefovska-Danilović M. Dynamic stiffness – based free vibration study of open circular cylindrical shells. in Journal of Sound and Vibration. 2020;486.
doi:10.1016/j.jsv.2020.115600 .

Kolarević, Nevenka, Nefovska-Danilović, Marija, "Dynamic stiffness – based free vibration study of open circular cylindrical shells" in Journal of Sound and Vibration, 486 (2020),
https://doi.org/10.1016/j.jsv.2020.115600 . .

TY  - CONF
AU  - Milojević, Marija
AU  - Nefovska-Danilović, Marija
AU  - Živanović, Stana
AU  - Marjanović, Miroslav
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2090
AB  - This paper investigates the effects of material properties (mass density, elastic and shear moduli) on dynamic properties of simply-supported CLT floors (natural frequencies, mode shapes and modal mass). Uncertainty quantification analysis has been carried out based on Monte Carlo simulations by varying material properties. Numerical modelling and analysis of the investigated CLT floors has been performed using finite element models in Abaqus CAE. The results show that uncertain mechanical parameters having significant influence on the dynamic properties are mass density, elastic modulus EL, and shear moduli GLT and GRT, where L, T and R denote longitudinal, tangential and radial direction, respectively.
PB  - European Association for Structural Dynamics
C3  - XI International Conference on Structural Dynamics EURODYN 2020
T1  - Effects of mechanical uncertainties on dynamic properties of cross-laminated timber floors
EP  - 3526
SP  - 3519
VL  - 2
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2090
ER  - 

@conference{
author = "Milojević, Marija and Nefovska-Danilović, Marija and Živanović, Stana and Marjanović, Miroslav",
year = "2020",
abstract = "This paper investigates the effects of material properties (mass density, elastic and shear moduli) on dynamic properties of simply-supported CLT floors (natural frequencies, mode shapes and modal mass). Uncertainty quantification analysis has been carried out based on Monte Carlo simulations by varying material properties. Numerical modelling and analysis of the investigated CLT floors has been performed using finite element models in Abaqus CAE. The results show that uncertain mechanical parameters having significant influence on the dynamic properties are mass density, elastic modulus EL, and shear moduli GLT and GRT, where L, T and R denote longitudinal, tangential and radial direction, respectively.",
publisher = "European Association for Structural Dynamics",
journal = "XI International Conference on Structural Dynamics EURODYN 2020",
title = "Effects of mechanical uncertainties on dynamic properties of cross-laminated timber floors",
pages = "3526-3519",
volume = "2",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2090"
}

Milojević, M., Nefovska-Danilović, M., Živanović, S.,& Marjanović, M.. (2020). Effects of mechanical uncertainties on dynamic properties of cross-laminated timber floors. in XI International Conference on Structural Dynamics EURODYN 2020
European Association for Structural Dynamics., 2, 3519-3526.
https://hdl.handle.net/21.15107/rcub_grafar_2090

Milojević M, Nefovska-Danilović M, Živanović S, Marjanović M. Effects of mechanical uncertainties on dynamic properties of cross-laminated timber floors. in XI International Conference on Structural Dynamics EURODYN 2020. 2020;2:3519-3526.
https://hdl.handle.net/21.15107/rcub_grafar_2090 .

Milojević, Marija, Nefovska-Danilović, Marija, Živanović, Stana, Marjanović, Miroslav, "Effects of mechanical uncertainties on dynamic properties of cross-laminated timber floors" in XI International Conference on Structural Dynamics EURODYN 2020, 2 (2020):3519-3526,
https://hdl.handle.net/21.15107/rcub_grafar_2090 .

TY  - CONF
AU  - Jočković, Miloš
AU  - Nefovska-Danilović, Marija
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2071
AB  - In this paper dynamic analysis of a curved Bernoulli – Euler beam subjected to a moving load is presented. Moving load is modelled as a single force with constant magnitude and direction, which moves along its trajectory. Plane curved Bernoulli – Euler beam element is formulated using isogeometric approach where both the displacement field and geometry of the beam are described using NURBS basis functions. Behavior of the beam element is defined and studied in the case of linear formulation where displacements and displacement gradients are assumed to be small. Validation of the proposed approach is presented for the plane curved beam subjected to moving load with constant velocity, magnitude and direction.
T1  - Isogeometric based dynamic analysis of Bernoulli Euler curved beam subjected to moving load
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2071
ER  - 

@conference{
author = "Jočković, Miloš and Nefovska-Danilović, Marija",
year = "2020",
abstract = "In this paper dynamic analysis of a curved Bernoulli – Euler beam subjected to a moving load is presented. Moving load is modelled as a single force with constant magnitude and direction, which moves along its trajectory. Plane curved Bernoulli – Euler beam element is formulated using isogeometric approach where both the displacement field and geometry of the beam are described using NURBS basis functions. Behavior of the beam element is defined and studied in the case of linear formulation where displacements and displacement gradients are assumed to be small. Validation of the proposed approach is presented for the plane curved beam subjected to moving load with constant velocity, magnitude and direction.",
title = "Isogeometric based dynamic analysis of Bernoulli Euler curved beam subjected to moving load",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2071"
}

Jočković, M.,& Nefovska-Danilović, M.. (2020). Isogeometric based dynamic analysis of Bernoulli Euler curved beam subjected to moving load. .
https://hdl.handle.net/21.15107/rcub_grafar_2071

Jočković M, Nefovska-Danilović M. Isogeometric based dynamic analysis of Bernoulli Euler curved beam subjected to moving load. 2020;.
https://hdl.handle.net/21.15107/rcub_grafar_2071 .

Jočković, Miloš, Nefovska-Danilović, Marija, "Isogeometric based dynamic analysis of Bernoulli Euler curved beam subjected to moving load" (2020),
https://hdl.handle.net/21.15107/rcub_grafar_2071 .

TY  - CONF
AU  - Jočković, Miloš
AU  - Radenković, Gligor
AU  - Nefovska-Danilović, Marija
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2072
AB  - In this paper the linear free vibration analysis of an arbitrarily curved spatial Bernoulli – Euler beam with circular cross section using isogeometric approach has been presented. In order to carry out free vibration analysis of the beam, the stiffness and mass matrices have been derived using basic properties of the continuum mechanics and differential geometry. The isogeometric approach is based on the idea that both the geometry and the displacement fields are described using the same basis functions - NURBS (Non – Uniform Rational B – Spline). The validation of
the proposed approach has been carried out on the spatial beam with arbitrary shape. Natural frequencies and mode shapes have shown good agreement with the results obtained using software based on classical finite element method.
T1  - Free vibration analysis of curved spatial Bernoulli-Euler beam with circular cross section using isogeometric approach
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2072
ER  - 

@conference{
author = "Jočković, Miloš and Radenković, Gligor and Nefovska-Danilović, Marija",
year = "2019",
abstract = "In this paper the linear free vibration analysis of an arbitrarily curved spatial Bernoulli – Euler beam with circular cross section using isogeometric approach has been presented. In order to carry out free vibration analysis of the beam, the stiffness and mass matrices have been derived using basic properties of the continuum mechanics and differential geometry. The isogeometric approach is based on the idea that both the geometry and the displacement fields are described using the same basis functions - NURBS (Non – Uniform Rational B – Spline). The validation of
the proposed approach has been carried out on the spatial beam with arbitrary shape. Natural frequencies and mode shapes have shown good agreement with the results obtained using software based on classical finite element method.",
title = "Free vibration analysis of curved spatial Bernoulli-Euler beam with circular cross section using isogeometric approach",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2072"
}

Jočković, M., Radenković, G.,& Nefovska-Danilović, M.. (2019). Free vibration analysis of curved spatial Bernoulli-Euler beam with circular cross section using isogeometric approach. .
https://hdl.handle.net/21.15107/rcub_grafar_2072

Jočković M, Radenković G, Nefovska-Danilović M. Free vibration analysis of curved spatial Bernoulli-Euler beam with circular cross section using isogeometric approach. 2019;.
https://hdl.handle.net/21.15107/rcub_grafar_2072 .

Jočković, Miloš, Radenković, Gligor, Nefovska-Danilović, Marija, "Free vibration analysis of curved spatial Bernoulli-Euler beam with circular cross section using isogeometric approach" (2019),
https://hdl.handle.net/21.15107/rcub_grafar_2072 .

TY  - JOUR
AU  - Marjanović, Miroslav
AU  - Nefovska-Danilović, Marija
AU  - Petronijević, Mira
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1842
AB  - In the paper, an overview of the development of the dynamic-stiffness-method-based computational model for the free vibration analysis of plates has been presented. Starting from several formulations of the so-called dynamic stiffness elements, formulated at the Institute for Numerical Analysis and Design of Structures (INP) at the Faculty of Civil Engineering, University of Belgrade in the last decade, a novel software framework FREEVIB has been developed and validated. FREEVIB is object-oriented software in Python environment, designed to predict free vibration characteristics in a wide range of possible structural problems (stepped, stiffened and folded plate structures, implying isotropic or orthotropic material formulations). The presented methodology still serves as a strong basis for further improvements through the extensive research efforts of authors, their collaborators and students.
PB  - University Ss. Cyril and Methodius, Faculty of Civil Engineering, Skopje
T2  - Scientific Journal of Civil Engineering
T1  - Development of dynamic stiffness method for free vibration analysis of plate structures
EP  - 74
IS  - 2
SP  - 69
VL  - 8
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1842
ER  - 

@article{
author = "Marjanović, Miroslav and Nefovska-Danilović, Marija and Petronijević, Mira",
year = "2019",
abstract = "In the paper, an overview of the development of the dynamic-stiffness-method-based computational model for the free vibration analysis of plates has been presented. Starting from several formulations of the so-called dynamic stiffness elements, formulated at the Institute for Numerical Analysis and Design of Structures (INP) at the Faculty of Civil Engineering, University of Belgrade in the last decade, a novel software framework FREEVIB has been developed and validated. FREEVIB is object-oriented software in Python environment, designed to predict free vibration characteristics in a wide range of possible structural problems (stepped, stiffened and folded plate structures, implying isotropic or orthotropic material formulations). The presented methodology still serves as a strong basis for further improvements through the extensive research efforts of authors, their collaborators and students.",
publisher = "University Ss. Cyril and Methodius, Faculty of Civil Engineering, Skopje",
journal = "Scientific Journal of Civil Engineering",
title = "Development of dynamic stiffness method for free vibration analysis of plate structures",
pages = "74-69",
number = "2",
volume = "8",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1842"
}

Marjanović, M., Nefovska-Danilović, M.,& Petronijević, M.. (2019). Development of dynamic stiffness method for free vibration analysis of plate structures. in Scientific Journal of Civil Engineering
University Ss. Cyril and Methodius, Faculty of Civil Engineering, Skopje., 8(2), 69-74.
https://hdl.handle.net/21.15107/rcub_grafar_1842

Marjanović M, Nefovska-Danilović M, Petronijević M. Development of dynamic stiffness method for free vibration analysis of plate structures. in Scientific Journal of Civil Engineering. 2019;8(2):69-74.
https://hdl.handle.net/21.15107/rcub_grafar_1842 .

Marjanović, Miroslav, Nefovska-Danilović, Marija, Petronijević, Mira, "Development of dynamic stiffness method for free vibration analysis of plate structures" in Scientific Journal of Civil Engineering, 8, no. 2 (2019):69-74,
https://hdl.handle.net/21.15107/rcub_grafar_1842 .

TY  - CONF
AU  - Milojević, Marija
AU  - Nefovska-Danilović, Marija
AU  - Marjanović, Miroslav
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1726
AB  - Cracks are the most common type of structural damage in many engineering structures,
introducing the local change in stiffness of structural elements and changing the dynamic
properties of the structure. Therefore, it is of great importance to detect and locate the existing
structural damage in its early phase to prevent crack propagation.
In the paper, free vibration analysis of beams and frames with multiple cracks has been
carried out. First, the dynamic stiffness matrix of beam element with multiple cracks based on
Bernoulli-Euler theory has been derived. Using the developed model, extensive free vibration
study of multiple-cracked frame structures has been conducted. Original Matlab code has
been developed for the derivation of natural frequencies and plot of mode shapes.
After the validation of the model against the existing data from the literature, several
benchmark examples are provided. As expected, increasing size and number of cracks lead to
decrease of natural frequencies due to the local stiffness degradation.
C3  - Proceedings / The 7th International Congress of Serbian Society of Mechanics, Sremski Karlovci, June 24-26, 2019, 2019
T1  - Free vibration analysis of multiple cracked frames using dynamic stiffness method
SP  - s5a
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1726
ER  - 

@conference{
author = "Milojević, Marija and Nefovska-Danilović, Marija and Marjanović, Miroslav",
year = "2019",
abstract = "Cracks are the most common type of structural damage in many engineering structures,
introducing the local change in stiffness of structural elements and changing the dynamic
properties of the structure. Therefore, it is of great importance to detect and locate the existing
structural damage in its early phase to prevent crack propagation.
In the paper, free vibration analysis of beams and frames with multiple cracks has been
carried out. First, the dynamic stiffness matrix of beam element with multiple cracks based on
Bernoulli-Euler theory has been derived. Using the developed model, extensive free vibration
study of multiple-cracked frame structures has been conducted. Original Matlab code has
been developed for the derivation of natural frequencies and plot of mode shapes.
After the validation of the model against the existing data from the literature, several
benchmark examples are provided. As expected, increasing size and number of cracks lead to
decrease of natural frequencies due to the local stiffness degradation.",
journal = "Proceedings / The 7th International Congress of Serbian Society of Mechanics, Sremski Karlovci, June 24-26, 2019, 2019",
title = "Free vibration analysis of multiple cracked frames using dynamic stiffness method",
pages = "s5a",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1726"
}

Milojević, M., Nefovska-Danilović, M.,& Marjanović, M.. (2019). Free vibration analysis of multiple cracked frames using dynamic stiffness method. in Proceedings / The 7th International Congress of Serbian Society of Mechanics, Sremski Karlovci, June 24-26, 2019, 2019, s5a.
https://hdl.handle.net/21.15107/rcub_grafar_1726

Milojević M, Nefovska-Danilović M, Marjanović M. Free vibration analysis of multiple cracked frames using dynamic stiffness method. in Proceedings / The 7th International Congress of Serbian Society of Mechanics, Sremski Karlovci, June 24-26, 2019, 2019. 2019;:s5a.
https://hdl.handle.net/21.15107/rcub_grafar_1726 .

Milojević, Marija, Nefovska-Danilović, Marija, Marjanović, Miroslav, "Free vibration analysis of multiple cracked frames using dynamic stiffness method" in Proceedings / The 7th International Congress of Serbian Society of Mechanics, Sremski Karlovci, June 24-26, 2019, 2019 (2019):s5a,
https://hdl.handle.net/21.15107/rcub_grafar_1726 .

TY  - CHAP
AU  - Jočković, Miloš
AU  - Radenković, Gligor
AU  - Nefovska-Danilović, Marija
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2074
AB  - У овом раду приказана је анализа слободних вибрација просторних гредних Бернули – Ојлерових носача произвољног облика применом изогеометријског приступа. Изогеометријским приступом геометрија носача се описује на исти начин као и поље померања, тј. дискретизација геометрије и поља померања се врши истим базним фунцијама, NURBS (Non – Uniform Rational B – Spline). Применом основних принципа диференцијалне геометрије и механике континуума изведене су матрица крутости и матрица маса гредног носача. Резултати сопствених фреквенција као и облика осциловања добијених применом изогеометријског приступа су упоређени са резултатима добијеним применом софтвера Abaqus. Добијени резултати применом изогеометријског приступа су показали задовољавајућу тачност и брзу конвергенцију.
T1  - Izogeometrijski pristup u analizi slobodnih vibracija prostornih Bernuli – Ojlerovih grednih nosača
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2074
ER  - 

@inbook{
author = "Jočković, Miloš and Radenković, Gligor and Nefovska-Danilović, Marija",
year = "2019",
abstract = "У овом раду приказана је анализа слободних вибрација просторних гредних Бернули – Ојлерових носача произвољног облика применом изогеометријског приступа. Изогеометријским приступом геометрија носача се описује на исти начин као и поље померања, тј. дискретизација геометрије и поља померања се врши истим базним фунцијама, NURBS (Non – Uniform Rational B – Spline). Применом основних принципа диференцијалне геометрије и механике континуума изведене су матрица крутости и матрица маса гредног носача. Резултати сопствених фреквенција као и облика осциловања добијених применом изогеометријског приступа су упоређени са резултатима добијеним применом софтвера Abaqus. Добијени резултати применом изогеометријског приступа су показали задовољавајућу тачност и брзу конвергенцију.",
booktitle = "Izogeometrijski pristup u analizi slobodnih vibracija prostornih Bernuli – Ojlerovih grednih nosača",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2074"
}

Jočković, M., Radenković, G.,& Nefovska-Danilović, M.. (2019). Izogeometrijski pristup u analizi slobodnih vibracija prostornih Bernuli – Ojlerovih grednih nosača. .
https://hdl.handle.net/21.15107/rcub_grafar_2074

Jočković M, Radenković G, Nefovska-Danilović M. Izogeometrijski pristup u analizi slobodnih vibracija prostornih Bernuli – Ojlerovih grednih nosača. 2019;.
https://hdl.handle.net/21.15107/rcub_grafar_2074 .

Jočković, Miloš, Radenković, Gligor, Nefovska-Danilović, Marija, "Izogeometrijski pristup u analizi slobodnih vibracija prostornih Bernuli – Ojlerovih grednih nosača" (2019),
https://hdl.handle.net/21.15107/rcub_grafar_2074 .

TY  - JOUR
AU  - Marjanović, Miroslav
AU  - Nefovska-Danilović, Marija
AU  - Damnjanović, Emilija
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1009
AB  - A framework for free vibration analysis of plate-like structures is presented in the paper. Based on the previously formulated dynamic stiffness elements, FREEVIB object-oriented software in Python environment has been created. Software design and structure as well as a wide range of possible structural problems that could be analyzed using the FREEVIB are presented. Through several illustrative examples including free vibration analysis of stepped, stiffened and folded plate structures, implying isotropic or orthotropic material formulations, the efficiency and accuracy of the FREEVIB is demonstrated. The possibilities of further extensions and improvements of the software are discussed.
PB  - Hindawi Limited
T2  - Shock and Vibration
T1  - Framework for Dynamic-Stiffness-Based Free Vibration Analysis of Plate-Like Structures
DO  - 10.1155/2019/1369235
ER  - 

@article{
author = "Marjanović, Miroslav and Nefovska-Danilović, Marija and Damnjanović, Emilija",
year = "2019",
abstract = "A framework for free vibration analysis of plate-like structures is presented in the paper. Based on the previously formulated dynamic stiffness elements, FREEVIB object-oriented software in Python environment has been created. Software design and structure as well as a wide range of possible structural problems that could be analyzed using the FREEVIB are presented. Through several illustrative examples including free vibration analysis of stepped, stiffened and folded plate structures, implying isotropic or orthotropic material formulations, the efficiency and accuracy of the FREEVIB is demonstrated. The possibilities of further extensions and improvements of the software are discussed.",
publisher = "Hindawi Limited",
journal = "Shock and Vibration",
title = "Framework for Dynamic-Stiffness-Based Free Vibration Analysis of Plate-Like Structures",
doi = "10.1155/2019/1369235"
}

Marjanović, M., Nefovska-Danilović, M.,& Damnjanović, E.. (2019). Framework for Dynamic-Stiffness-Based Free Vibration Analysis of Plate-Like Structures. in Shock and Vibration
Hindawi Limited..
https://doi.org/10.1155/2019/1369235

Marjanović M, Nefovska-Danilović M, Damnjanović E. Framework for Dynamic-Stiffness-Based Free Vibration Analysis of Plate-Like Structures. in Shock and Vibration. 2019;.
doi:10.1155/2019/1369235 .

Marjanović, Miroslav, Nefovska-Danilović, Marija, Damnjanović, Emilija, "Framework for Dynamic-Stiffness-Based Free Vibration Analysis of Plate-Like Structures" in Shock and Vibration (2019),
https://doi.org/10.1155/2019/1369235 . .

TY  - JOUR
AU  - Jočković, Miloš
AU  - Radenković, Gligor
AU  - Nefovska-Danilović, Marija
AU  - Baitsch, M.
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/986
AB  - This paper deals with the linear free vibration analysis of Bernoulli–Euler and Rayleigh curved beams using isogeometric approach. The geometry of the beam as well as the displacement field are defined using the NURBS basis functions which present the basic concept of the isogeometric analysis. A novel approach based on the fundamental relations of the differential geometry and Cauchy continuum beam model is presented and applied to derive the stiffness and consistent mass matrices of the corresponding spatial curved beam element. In the Bernoulli–Euler beam element only translational and torsional inertia are taken into account, while the Rayleigh beam element takes all inertial terms into consideration. Due to their formulation, isogeometric beam elements can be used for the dynamic analysis of spatial curved beams. Several illustrative examples have been chosen in order to check the convergence and accuracy of the proposed method. The results have been compared with the available data from the literature as well as with the finite element solutions.
PB  - Elsevier Inc.
T2  - Applied Mathematical Modelling
T1  - Free vibration analysis of spatial Bernoulli–Euler and Rayleigh curved beams using isogeometric approach
EP  - 172
SP  - 152
VL  - 71
DO  - 10.1016/j.apm.2019.02.002
ER  - 

@article{
author = "Jočković, Miloš and Radenković, Gligor and Nefovska-Danilović, Marija and Baitsch, M.",
year = "2019",
abstract = "This paper deals with the linear free vibration analysis of Bernoulli–Euler and Rayleigh curved beams using isogeometric approach. The geometry of the beam as well as the displacement field are defined using the NURBS basis functions which present the basic concept of the isogeometric analysis. A novel approach based on the fundamental relations of the differential geometry and Cauchy continuum beam model is presented and applied to derive the stiffness and consistent mass matrices of the corresponding spatial curved beam element. In the Bernoulli–Euler beam element only translational and torsional inertia are taken into account, while the Rayleigh beam element takes all inertial terms into consideration. Due to their formulation, isogeometric beam elements can be used for the dynamic analysis of spatial curved beams. Several illustrative examples have been chosen in order to check the convergence and accuracy of the proposed method. The results have been compared with the available data from the literature as well as with the finite element solutions.",
publisher = "Elsevier Inc.",
journal = "Applied Mathematical Modelling",
title = "Free vibration analysis of spatial Bernoulli–Euler and Rayleigh curved beams using isogeometric approach",
pages = "172-152",
volume = "71",
doi = "10.1016/j.apm.2019.02.002"
}

Jočković, M., Radenković, G., Nefovska-Danilović, M.,& Baitsch, M.. (2019). Free vibration analysis of spatial Bernoulli–Euler and Rayleigh curved beams using isogeometric approach. in Applied Mathematical Modelling
Elsevier Inc.., 71, 152-172.
https://doi.org/10.1016/j.apm.2019.02.002

Jočković M, Radenković G, Nefovska-Danilović M, Baitsch M. Free vibration analysis of spatial Bernoulli–Euler and Rayleigh curved beams using isogeometric approach. in Applied Mathematical Modelling. 2019;71:152-172.
doi:10.1016/j.apm.2019.02.002 .

Jočković, Miloš, Radenković, Gligor, Nefovska-Danilović, Marija, Baitsch, M., "Free vibration analysis of spatial Bernoulli–Euler and Rayleigh curved beams using isogeometric approach" in Applied Mathematical Modelling, 71 (2019):152-172,
https://doi.org/10.1016/j.apm.2019.02.002 . .

TY  - CHAP
AU  - Nefovska-Danilović, Marija
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2851
AB  - In this paper, the dynamic stiffness method has been applied in the free vibration analysis of open circular cylindrical shells having special boundary conditions. Dynamic stiffness matrix, based on the exact solutions of the free vibration problem according to the Flügge thin shell theory, is formulated and im-plemented in Matlab code to compute natural frequencies and mode shapes. The results of numerical examples for an open cylindrical shell with stepwise thickness variation, as well as for barrel roof, are pre-sented and compared to the results obtained by using the commercial finite element program Abaqus.
PB  - Univerzitet u Beogradu-Građevinski fakultet, Univerzitet Crne Gore-Građevinski fakultet, Akademija inženjerskih nauka Srbije
T2  - Teorija građevinskih konstrukcija, Monografija posvećena uspomeni na profesora Miodraga Sekulovića
T1  - Primena metode dinamičke krutosti u analizi slobodnih vibracija otvorenih kružnih cilindričnih ljuski
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2851
ER  - 

@inbook{
author = "Nefovska-Danilović, Marija",
year = "2019",
abstract = "In this paper, the dynamic stiffness method has been applied in the free vibration analysis of open circular cylindrical shells having special boundary conditions. Dynamic stiffness matrix, based on the exact solutions of the free vibration problem according to the Flügge thin shell theory, is formulated and im-plemented in Matlab code to compute natural frequencies and mode shapes. The results of numerical examples for an open cylindrical shell with stepwise thickness variation, as well as for barrel roof, are pre-sented and compared to the results obtained by using the commercial finite element program Abaqus.",
publisher = "Univerzitet u Beogradu-Građevinski fakultet, Univerzitet Crne Gore-Građevinski fakultet, Akademija inženjerskih nauka Srbije",
journal = "Teorija građevinskih konstrukcija, Monografija posvećena uspomeni na profesora Miodraga Sekulovića",
booktitle = "Primena metode dinamičke krutosti u analizi slobodnih vibracija otvorenih kružnih cilindričnih ljuski",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2851"
}

Nefovska-Danilović, M.. (2019). Primena metode dinamičke krutosti u analizi slobodnih vibracija otvorenih kružnih cilindričnih ljuski. in Teorija građevinskih konstrukcija, Monografija posvećena uspomeni na profesora Miodraga Sekulovića
Univerzitet u Beogradu-Građevinski fakultet, Univerzitet Crne Gore-Građevinski fakultet, Akademija inženjerskih nauka Srbije..
https://hdl.handle.net/21.15107/rcub_grafar_2851

Nefovska-Danilović M. Primena metode dinamičke krutosti u analizi slobodnih vibracija otvorenih kružnih cilindričnih ljuski. in Teorija građevinskih konstrukcija, Monografija posvećena uspomeni na profesora Miodraga Sekulovića. 2019;.
https://hdl.handle.net/21.15107/rcub_grafar_2851 .

Nefovska-Danilović, Marija, "Primena metode dinamičke krutosti u analizi slobodnih vibracija otvorenih kružnih cilindričnih ljuski" in Teorija građevinskih konstrukcija, Monografija posvećena uspomeni na profesora Miodraga Sekulovića (2019),
https://hdl.handle.net/21.15107/rcub_grafar_2851 .

TY  - CONF
AU  - Petronijević, Mira
AU  - Nefovska-Danilović, Marija
AU  - Radišić, Marko
AU  - Jočković, Miloš
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1633
AB  - U ovom radu dat je kratak prikaz nekih od najznačajnijih rezultata učesnika projekta TR36046: „Istraživanje dejstva vibracija na ljude i objekte u cilju održivog razvoja gradova“, Ministarstva prosvete, nauke i tehnološkog razvoja Republike Srbije. Opisan je način nastanka i prostiranja vibracija, kao i način procene dejstva vibracija na objekte i ljude sa osvrtom na nemačke i britanske standarde. Predstavljeni su empirijski i numerički modeli za analizu vibracija od saobraćaja na osnovu izvršenih merenja.
AB  - This paper presents some of the most important results of the project TR36046: “Investigation of vibration effects on humans and buildings in the aim of the sustainable development of cities” financed by the Ministry of Education, Science and Technological Development of the Republic of Serbia. The paper describes the vibrations generation and propagation as well as the estimation of the effects of vibrations on objects and people with a reference to German and British standards. Empirical and numerical models for the traffic induced vibrations analysis based on the performed measurements were presented.
PB  - Društvo građevinskih konstruktera Srbije, Beograd
C3  - Zbornik radova sa nacionalnog kongresa DGKS / Društvо građevinskih konstruktera Srbije, 15. kongres, 6-8. septembar 2018, Zlatibor
T1  - Istraživanje dejstva vibracija na ljude i objekte u cilju održivog razvoja gradova
T1  - Development of sustainable cities: effect of traffic induced vibrations on buildings and humans
EP  - 556
SP  - 547
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1633
ER  - 

@conference{
author = "Petronijević, Mira and Nefovska-Danilović, Marija and Radišić, Marko and Jočković, Miloš",
year = "2018",
abstract = "U ovom radu dat je kratak prikaz nekih od najznačajnijih rezultata učesnika projekta TR36046: „Istraživanje dejstva vibracija na ljude i objekte u cilju održivog razvoja gradova“, Ministarstva prosvete, nauke i tehnološkog razvoja Republike Srbije. Opisan je način nastanka i prostiranja vibracija, kao i način procene dejstva vibracija na objekte i ljude sa osvrtom na nemačke i britanske standarde. Predstavljeni su empirijski i numerički modeli za analizu vibracija od saobraćaja na osnovu izvršenih merenja., This paper presents some of the most important results of the project TR36046: “Investigation of vibration effects on humans and buildings in the aim of the sustainable development of cities” financed by the Ministry of Education, Science and Technological Development of the Republic of Serbia. The paper describes the vibrations generation and propagation as well as the estimation of the effects of vibrations on objects and people with a reference to German and British standards. Empirical and numerical models for the traffic induced vibrations analysis based on the performed measurements were presented.",
publisher = "Društvo građevinskih konstruktera Srbije, Beograd",
journal = "Zbornik radova sa nacionalnog kongresa DGKS / Društvо građevinskih konstruktera Srbije, 15. kongres, 6-8. septembar 2018, Zlatibor",
title = "Istraživanje dejstva vibracija na ljude i objekte u cilju održivog razvoja gradova, Development of sustainable cities: effect of traffic induced vibrations on buildings and humans",
pages = "556-547",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1633"
}

Petronijević, M., Nefovska-Danilović, M., Radišić, M.,& Jočković, M.. (2018). Istraživanje dejstva vibracija na ljude i objekte u cilju održivog razvoja gradova. in Zbornik radova sa nacionalnog kongresa DGKS / Društvо građevinskih konstruktera Srbije, 15. kongres, 6-8. septembar 2018, Zlatibor
Društvo građevinskih konstruktera Srbije, Beograd., 547-556.
https://hdl.handle.net/21.15107/rcub_grafar_1633

Petronijević M, Nefovska-Danilović M, Radišić M, Jočković M. Istraživanje dejstva vibracija na ljude i objekte u cilju održivog razvoja gradova. in Zbornik radova sa nacionalnog kongresa DGKS / Društvо građevinskih konstruktera Srbije, 15. kongres, 6-8. septembar 2018, Zlatibor. 2018;:547-556.
https://hdl.handle.net/21.15107/rcub_grafar_1633 .

Petronijević, Mira, Nefovska-Danilović, Marija, Radišić, Marko, Jočković, Miloš, "Istraživanje dejstva vibracija na ljude i objekte u cilju održivog razvoja gradova" in Zbornik radova sa nacionalnog kongresa DGKS / Društvо građevinskih konstruktera Srbije, 15. kongres, 6-8. septembar 2018, Zlatibor (2018):547-556,
https://hdl.handle.net/21.15107/rcub_grafar_1633 .