TY  - CONF
AU  - Perović, Zoran
AU  - Šumarac, Dragoslav
AU  - Ćorić, Stanko
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3227
AB  - In this paper, a uniaxial material model with the ability to describe progressive damage growth, but also to provide a reliable estimation of fatigue life in the low-cycle regime of loading, is presented. The determination of damage in the material is based on two levels of modeling mechanical behavior. The element on the micro level establishes an elastoplastic damage model that depends on the maximum strain. The second level of modeling is defined by the connection of microelements with different values of total energy dissipated at failure. Hysteretic energy dissipated in heat during cyclic loading is determined for each micro element based on the analytical expression provided by a hysteretic operator. Different distributions of values of maximum dissipated energy can thus provide various fatigue damage evolution laws. The analytical expression for hysteretic energy loss for one element and its numerical implementation is enabled by the computational model whose parameters can be defined by monotonic and cyclic loading experimental tests. Validation of the introduced material model can additionally be concluded by constant and variable strain-controlled experiments, as well as with the comparison of constructed failure curves with existing methods for assessment of mean stress effect in fatigue analysis.
PB  - The Fourth International Conference on Damage Mechanics
PB  - Louisiana State University
C3  - The Fourth International Conference on Damage Mechanics (ICDM4) May 15-18, 2023, Louisiana State University, Baton Rouge, LA, US
T1  - Low-Cycle Fatigue Damage Model for Ductile Materials
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3227
ER  - 

@conference{
author = "Perović, Zoran and Šumarac, Dragoslav and Ćorić, Stanko",
year = "2023",
abstract = "In this paper, a uniaxial material model with the ability to describe progressive damage growth, but also to provide a reliable estimation of fatigue life in the low-cycle regime of loading, is presented. The determination of damage in the material is based on two levels of modeling mechanical behavior. The element on the micro level establishes an elastoplastic damage model that depends on the maximum strain. The second level of modeling is defined by the connection of microelements with different values of total energy dissipated at failure. Hysteretic energy dissipated in heat during cyclic loading is determined for each micro element based on the analytical expression provided by a hysteretic operator. Different distributions of values of maximum dissipated energy can thus provide various fatigue damage evolution laws. The analytical expression for hysteretic energy loss for one element and its numerical implementation is enabled by the computational model whose parameters can be defined by monotonic and cyclic loading experimental tests. Validation of the introduced material model can additionally be concluded by constant and variable strain-controlled experiments, as well as with the comparison of constructed failure curves with existing methods for assessment of mean stress effect in fatigue analysis.",
publisher = "The Fourth International Conference on Damage Mechanics, Louisiana State University",
journal = "The Fourth International Conference on Damage Mechanics (ICDM4) May 15-18, 2023, Louisiana State University, Baton Rouge, LA, US",
title = "Low-Cycle Fatigue Damage Model for Ductile Materials",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3227"
}

Perović, Z., Šumarac, D.,& Ćorić, S.. (2023). Low-Cycle Fatigue Damage Model for Ductile Materials. in The Fourth International Conference on Damage Mechanics (ICDM4) May 15-18, 2023, Louisiana State University, Baton Rouge, LA, US
The Fourth International Conference on Damage Mechanics..
https://hdl.handle.net/21.15107/rcub_grafar_3227

Perović Z, Šumarac D, Ćorić S. Low-Cycle Fatigue Damage Model for Ductile Materials. in The Fourth International Conference on Damage Mechanics (ICDM4) May 15-18, 2023, Louisiana State University, Baton Rouge, LA, US. 2023;.
https://hdl.handle.net/21.15107/rcub_grafar_3227 .

Perović, Zoran, Šumarac, Dragoslav, Ćorić, Stanko, "Low-Cycle Fatigue Damage Model for Ductile Materials" in The Fourth International Conference on Damage Mechanics (ICDM4) May 15-18, 2023, Louisiana State University, Baton Rouge, LA, US (2023),
https://hdl.handle.net/21.15107/rcub_grafar_3227 .

TY  - JOUR
AU  - Ćorić, Stanko
AU  - Perović, Zoran
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3152
AB  - This paper considers the phenomenon of the instability of steel plane frame structures in the elastic-plastic domain. The numerical analysis uses FEM, where the corresponding stiffness matrices are based upon the trigonometric and hyperbolic interpolation functions of normal forces. The tangent modulus concept is applied when buckling occurs in the plastic range. Thus, the stiffness matrices for nonlinear material behavior are also derived. The procedure for determining effective length factors of compressed columns, which implies a global stability analysis of entire frames, is established too. It means that the proposed approach is based on the assumption that the collapse of the structure occurs when the most loaded columns reach their stability limit. So, the presented procedure enables the calculation of the real critical load of plane frame structures in the elastic-plastic domain and determines the corresponding effective length factors.
PB  - Hindawi
T2  - Advances in Civil Engineering
T1  - Stability Calculation of the Plane Steel Frame Structures Using Tangent Modulus Theory
SP  - 5221405
DO  - 10.1155/2023/5221405
ER  - 

@article{
author = "Ćorić, Stanko and Perović, Zoran",
year = "2023",
abstract = "This paper considers the phenomenon of the instability of steel plane frame structures in the elastic-plastic domain. The numerical analysis uses FEM, where the corresponding stiffness matrices are based upon the trigonometric and hyperbolic interpolation functions of normal forces. The tangent modulus concept is applied when buckling occurs in the plastic range. Thus, the stiffness matrices for nonlinear material behavior are also derived. The procedure for determining effective length factors of compressed columns, which implies a global stability analysis of entire frames, is established too. It means that the proposed approach is based on the assumption that the collapse of the structure occurs when the most loaded columns reach their stability limit. So, the presented procedure enables the calculation of the real critical load of plane frame structures in the elastic-plastic domain and determines the corresponding effective length factors.",
publisher = "Hindawi",
journal = "Advances in Civil Engineering",
title = "Stability Calculation of the Plane Steel Frame Structures Using Tangent Modulus Theory",
pages = "5221405",
doi = "10.1155/2023/5221405"
}

Ćorić, S.,& Perović, Z.. (2023). Stability Calculation of the Plane Steel Frame Structures Using Tangent Modulus Theory. in Advances in Civil Engineering
Hindawi., 5221405.
https://doi.org/10.1155/2023/5221405

Ćorić S, Perović Z. Stability Calculation of the Plane Steel Frame Structures Using Tangent Modulus Theory. in Advances in Civil Engineering. 2023;:5221405.
doi:10.1155/2023/5221405 .

Ćorić, Stanko, Perović, Zoran, "Stability Calculation of the Plane Steel Frame Structures Using Tangent Modulus Theory" in Advances in Civil Engineering (2023):5221405,
https://doi.org/10.1155/2023/5221405 . .

TY  - JOUR
AU  - Ćorić, Stanko
AU  - Perović, Zoran
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3153
AB  - This paper considers the phenomenon of the instability of steel plane frame structures in the elastic-plastic domain. The numerical analysis uses FEM, where the corresponding stiffness matrices are based upon the trigonometric and hyperbolic interpolation functions of normal forces. The tangent modulus concept is applied when buckling occurs in the plastic range. Thus, the stiffness matrices for nonlinear material behavior are also derived. The procedure for determining effective length factors of compressed columns, which implies a global stability analysis of entire frames, is established too. It means that the proposed approach is based on the assumption that the collapse of the structure occurs when the most loaded columns reach their stability limit. So, the presented procedure enables the calculation of the real critical load of plane frame structures in the elastic-plastic domain and determines the corresponding effective length factors.
PB  - Hindawi
T2  - Advances in Civil Engineering
T1  - Stability Calculation of the Plane Steel Frame Structures Using Tangent Modulus Theory
DO  - 10.1155/2023/5221405
ER  - 

@article{
author = "Ćorić, Stanko and Perović, Zoran",
year = "2023",
abstract = "This paper considers the phenomenon of the instability of steel plane frame structures in the elastic-plastic domain. The numerical analysis uses FEM, where the corresponding stiffness matrices are based upon the trigonometric and hyperbolic interpolation functions of normal forces. The tangent modulus concept is applied when buckling occurs in the plastic range. Thus, the stiffness matrices for nonlinear material behavior are also derived. The procedure for determining effective length factors of compressed columns, which implies a global stability analysis of entire frames, is established too. It means that the proposed approach is based on the assumption that the collapse of the structure occurs when the most loaded columns reach their stability limit. So, the presented procedure enables the calculation of the real critical load of plane frame structures in the elastic-plastic domain and determines the corresponding effective length factors.",
publisher = "Hindawi",
journal = "Advances in Civil Engineering",
title = "Stability Calculation of the Plane Steel Frame Structures Using Tangent Modulus Theory",
doi = "10.1155/2023/5221405"
}

Ćorić, S.,& Perović, Z.. (2023). Stability Calculation of the Plane Steel Frame Structures Using Tangent Modulus Theory. in Advances in Civil Engineering
Hindawi..
https://doi.org/10.1155/2023/5221405

Ćorić S, Perović Z. Stability Calculation of the Plane Steel Frame Structures Using Tangent Modulus Theory. in Advances in Civil Engineering. 2023;.
doi:10.1155/2023/5221405 .

Ćorić, Stanko, Perović, Zoran, "Stability Calculation of the Plane Steel Frame Structures Using Tangent Modulus Theory" in Advances in Civil Engineering (2023),
https://doi.org/10.1155/2023/5221405 . .

TY  - JOUR
AU  - Perović, Zoran
AU  - Ćorić, Stanko
AU  - Isaković, Snežana
AU  - Šumarac, Dragoslav
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3151
AB  - This paper considers the phenomenon of the instability of steel plane frame structures in the elastic-plastic domain. The numerical analysis uses FEM, where the corresponding stiffness matrices are based upon the trigonometric and hyperbolic interpolation functions of normal forces. The tangent modulus concept is applied when buckling occurs in the plastic range. Thus, the stiffness matrices for nonlinear material behavior are also derived. The procedure for determining effective length factors of compressed columns, which implies a global stability analysis of entire frames, is established too. It means that the proposed approach is based on the assumption that the collapse of the structure occurs when the most loaded columns reach their stability limit. So, the presented procedure enables the calculation of the real critical load of plane frame structures in the elastic-plastic domain and determines the corresponding effective length factors.
T2  - Applied Sciences, MDPI
T1  - Potential and benefit of green roof energy renovation of existing residential buildings with a flat roof in Belgrade
IS  - 13
IS  - 13
SP  - 7348
DO  - 10.3390/app13137348
ER  - 

@article{
author = "Perović, Zoran and Ćorić, Stanko and Isaković, Snežana and Šumarac, Dragoslav",
year = "2023",
abstract = "This paper considers the phenomenon of the instability of steel plane frame structures in the elastic-plastic domain. The numerical analysis uses FEM, where the corresponding stiffness matrices are based upon the trigonometric and hyperbolic interpolation functions of normal forces. The tangent modulus concept is applied when buckling occurs in the plastic range. Thus, the stiffness matrices for nonlinear material behavior are also derived. The procedure for determining effective length factors of compressed columns, which implies a global stability analysis of entire frames, is established too. It means that the proposed approach is based on the assumption that the collapse of the structure occurs when the most loaded columns reach their stability limit. So, the presented procedure enables the calculation of the real critical load of plane frame structures in the elastic-plastic domain and determines the corresponding effective length factors.",
journal = "Applied Sciences, MDPI",
title = "Potential and benefit of green roof energy renovation of existing residential buildings with a flat roof in Belgrade",
number = "13, 13",
pages = "7348",
doi = "10.3390/app13137348"
}

Perović, Z., Ćorić, S., Isaković, S.,& Šumarac, D.. (2023). Potential and benefit of green roof energy renovation of existing residential buildings with a flat roof in Belgrade. in Applied Sciences, MDPI(13), 7348.
https://doi.org/10.3390/app13137348

Perović Z, Ćorić S, Isaković S, Šumarac D. Potential and benefit of green roof energy renovation of existing residential buildings with a flat roof in Belgrade. in Applied Sciences, MDPI. 2023;(13):7348.
doi:10.3390/app13137348 .

Perović, Zoran, Ćorić, Stanko, Isaković, Snežana, Šumarac, Dragoslav, "Potential and benefit of green roof energy renovation of existing residential buildings with a flat roof in Belgrade" in Applied Sciences, MDPI, no. 13 (2023):7348,
https://doi.org/10.3390/app13137348 . .

TY  - CONF
AU  - Perović, Zoran
AU  - Ćorić, Stanko
AU  - Isaković, Snežana
AU  - Stošić, Saša
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2765
AB  - In this paper, different aspects of a green roof installation are analyzed on several typical 
buildings in Belgrade. The analysis is performed for buildings with extensive and intensive green 
roofs. The goal was to determine their influence on existing buildings' structural capacity and 
thermal characteristics. According to the impact on the structure and its energy performance, the 
overall effect and justification of the installation of the green roof are determined
PB  - Association of Structural Engineers of Serbia
C3  - Друштво грађевинских конструктера Србије - Конгрес 2022.
T1  - Benefits of green roof installations on buildings with flat roof
EP  - 607
SP  - 600
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2765
ER  - 

@conference{
author = "Perović, Zoran and Ćorić, Stanko and Isaković, Snežana and Stošić, Saša",
year = "2022",
abstract = "In this paper, different aspects of a green roof installation are analyzed on several typical 
buildings in Belgrade. The analysis is performed for buildings with extensive and intensive green 
roofs. The goal was to determine their influence on existing buildings' structural capacity and 
thermal characteristics. According to the impact on the structure and its energy performance, the 
overall effect and justification of the installation of the green roof are determined",
publisher = "Association of Structural Engineers of Serbia",
journal = "Друштво грађевинских конструктера Србије - Конгрес 2022.",
title = "Benefits of green roof installations on buildings with flat roof",
pages = "607-600",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2765"
}

Perović, Z., Ćorić, S., Isaković, S.,& Stošić, S.. (2022). Benefits of green roof installations on buildings with flat roof. in Друштво грађевинских конструктера Србије - Конгрес 2022.
Association of Structural Engineers of Serbia., 600-607.
https://hdl.handle.net/21.15107/rcub_grafar_2765

Perović Z, Ćorić S, Isaković S, Stošić S. Benefits of green roof installations on buildings with flat roof. in Друштво грађевинских конструктера Србије - Конгрес 2022.. 2022;:600-607.
https://hdl.handle.net/21.15107/rcub_grafar_2765 .

Perović, Zoran, Ćorić, Stanko, Isaković, Snežana, Stošić, Saša, "Benefits of green roof installations on buildings with flat roof" in Друштво грађевинских конструктера Србије - Конгрес 2022. (2022):600-607,
https://hdl.handle.net/21.15107/rcub_grafar_2765 .

TY  - CONF
AU  - Milekić, Nemanja
AU  - Bendić, Milica
AU  - Ćorić, Stanko
AU  - Perović, Zoran
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2596
AB  - Modern structures often use new technology materials as special high-strength steels. This is
one of the reasons why cross-sections of structural members are smaller and structures are lighter
than those built fifty years ago. Besides, there are new calculation methods that try to optimize
material use and save money. Engineers today are faced with new challenges in terms of the
design and construction process. Structures are often very slender and can be prone to loss of
structural stability.
The most common example of such a slender element is column. They are often subject to
compression loading so stability can be a significant factor in element design. To build safe
structures with optimized material use, it’s very important to have a clear picture of element
behavior in the pre-buckling and post-buckling phases. The nonlinear analysis could be very
complex even for simple structures and because of that, different software is to be used for such
tasks. In this paper, a simplified analytical model for the analysis of elasto-plastic buckling of
compressed columns is illustrated.
C3  - 8th International Congress of Serbian Society of Mechanics Kragujevac, Serbia, June 28-30, 2021, 224-231-
T1  - A model for the analysis of elasto-plastic buckling of compressed columns
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2596
ER  - 

@conference{
author = "Milekić, Nemanja and Bendić, Milica and Ćorić, Stanko and Perović, Zoran",
year = "2021",
abstract = "Modern structures often use new technology materials as special high-strength steels. This is
one of the reasons why cross-sections of structural members are smaller and structures are lighter
than those built fifty years ago. Besides, there are new calculation methods that try to optimize
material use and save money. Engineers today are faced with new challenges in terms of the
design and construction process. Structures are often very slender and can be prone to loss of
structural stability.
The most common example of such a slender element is column. They are often subject to
compression loading so stability can be a significant factor in element design. To build safe
structures with optimized material use, it’s very important to have a clear picture of element
behavior in the pre-buckling and post-buckling phases. The nonlinear analysis could be very
complex even for simple structures and because of that, different software is to be used for such
tasks. In this paper, a simplified analytical model for the analysis of elasto-plastic buckling of
compressed columns is illustrated.",
journal = "8th International Congress of Serbian Society of Mechanics Kragujevac, Serbia, June 28-30, 2021, 224-231-",
title = "A model for the analysis of elasto-plastic buckling of compressed columns",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2596"
}

Milekić, N., Bendić, M., Ćorić, S.,& Perović, Z.. (2021). A model for the analysis of elasto-plastic buckling of compressed columns. in 8th International Congress of Serbian Society of Mechanics Kragujevac, Serbia, June 28-30, 2021, 224-231-.
https://hdl.handle.net/21.15107/rcub_grafar_2596

Milekić N, Bendić M, Ćorić S, Perović Z. A model for the analysis of elasto-plastic buckling of compressed columns. in 8th International Congress of Serbian Society of Mechanics Kragujevac, Serbia, June 28-30, 2021, 224-231-. 2021;.
https://hdl.handle.net/21.15107/rcub_grafar_2596 .

Milekić, Nemanja, Bendić, Milica, Ćorić, Stanko, Perović, Zoran, "A model for the analysis of elasto-plastic buckling of compressed columns" in 8th International Congress of Serbian Society of Mechanics Kragujevac, Serbia, June 28-30, 2021, 224-231- (2021),
https://hdl.handle.net/21.15107/rcub_grafar_2596 .

TY  - CONF
AU  - Milekić, Nemanja
AU  - Ćorić, Stanko
AU  - Perović, Zoran
AU  - Šumarac, Dragoslav
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2556
AB  - Green energy has become an essential piece of any sustainable development 
analysis. Furthermore, renewable energy must be recognized as an area with the greatest 
potential for reducing the overall pollution in the Republic of Serbia. The goal of this 
paper is to show the benefits of the investment in solar energy use and to determine the 
economic justification of the photovoltaic system implementation on the roof of houses in 
the AP of Vojvodina.
PB  - Građevinski fakultet Subotica
C3  - http://www.gf.uns.ac.rs/~zbornik/doc/NS2021.12.pdf
T1  - The analysis of the photovoltaic system investment profitability in Vojvodina
DO  - 10.14415/konferencijaGFS2021.12
ER  - 

@conference{
author = "Milekić, Nemanja and Ćorić, Stanko and Perović, Zoran and Šumarac, Dragoslav",
year = "2021",
abstract = "Green energy has become an essential piece of any sustainable development 
analysis. Furthermore, renewable energy must be recognized as an area with the greatest 
potential for reducing the overall pollution in the Republic of Serbia. The goal of this 
paper is to show the benefits of the investment in solar energy use and to determine the 
economic justification of the photovoltaic system implementation on the roof of houses in 
the AP of Vojvodina.",
publisher = "Građevinski fakultet Subotica",
journal = "http://www.gf.uns.ac.rs/~zbornik/doc/NS2021.12.pdf",
title = "The analysis of the photovoltaic system investment profitability in Vojvodina",
doi = "10.14415/konferencijaGFS2021.12"
}

Milekić, N., Ćorić, S., Perović, Z.,& Šumarac, D.. (2021). The analysis of the photovoltaic system investment profitability in Vojvodina. in http://www.gf.uns.ac.rs/~zbornik/doc/NS2021.12.pdf
Građevinski fakultet Subotica..
https://doi.org/10.14415/konferencijaGFS2021.12

Milekić N, Ćorić S, Perović Z, Šumarac D. The analysis of the photovoltaic system investment profitability in Vojvodina. in http://www.gf.uns.ac.rs/~zbornik/doc/NS2021.12.pdf. 2021;.
doi:10.14415/konferencijaGFS2021.12 .

Milekić, Nemanja, Ćorić, Stanko, Perović, Zoran, Šumarac, Dragoslav, "The analysis of the photovoltaic system investment profitability in Vojvodina" in http://www.gf.uns.ac.rs/~zbornik/doc/NS2021.12.pdf (2021),
https://doi.org/10.14415/konferencijaGFS2021.12 . .

TY  - CONF
AU  - Perović, Zoran
AU  - Šumarac, Dragoslav
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2601
AB  - In this paper, hysteretic energy loss in cyclic loading is used as the main parameter in fatigue 
damage modeling. The analytical expression for hysteretic energy loss and its numerical 
implementation are features of the powerful hysteretic operator that has the ability to model 
progressive damage growth based on the maximum strain amplitude. Its scalar damage parameter 
is further modified in order to produce a reliable estimation of fatigue life under arbitrary loading.
PB  - Serbian Society of Mechanics
C3  - 8th International Congress of Serbian Society of Mechanics
T1  - Low-cycle fatigue damage modeling with hysteretic energy loss
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2601
ER  - 

@conference{
author = "Perović, Zoran and Šumarac, Dragoslav",
year = "2021",
abstract = "In this paper, hysteretic energy loss in cyclic loading is used as the main parameter in fatigue 
damage modeling. The analytical expression for hysteretic energy loss and its numerical 
implementation are features of the powerful hysteretic operator that has the ability to model 
progressive damage growth based on the maximum strain amplitude. Its scalar damage parameter 
is further modified in order to produce a reliable estimation of fatigue life under arbitrary loading.",
publisher = "Serbian Society of Mechanics",
journal = "8th International Congress of Serbian Society of Mechanics",
title = "Low-cycle fatigue damage modeling with hysteretic energy loss",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2601"
}

Perović, Z.,& Šumarac, D.. (2021). Low-cycle fatigue damage modeling with hysteretic energy loss. in 8th International Congress of Serbian Society of Mechanics
Serbian Society of Mechanics..
https://hdl.handle.net/21.15107/rcub_grafar_2601

Perović Z, Šumarac D. Low-cycle fatigue damage modeling with hysteretic energy loss. in 8th International Congress of Serbian Society of Mechanics. 2021;.
https://hdl.handle.net/21.15107/rcub_grafar_2601 .

Perović, Zoran, Šumarac, Dragoslav, "Low-cycle fatigue damage modeling with hysteretic energy loss" in 8th International Congress of Serbian Society of Mechanics (2021),
https://hdl.handle.net/21.15107/rcub_grafar_2601 .

TY  - JOUR
AU  - Knežević, Petar
AU  - Šumarac, Dragoslav
AU  - Perović, Zoran
AU  - Dolićanin, Ćemal
AU  - Burzić, Zijah
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2134
AB  - This paper presents the new type of Preisach model that describes the elastoplastic behavior of structural mild steel under axial monotonic tension load with damage. Newly developed model takes into account elastic region, horizontal yield plateau, plastic hardening region, and softening region due to material damage under tension. In order to study the monotonic behavior of structural mild steel and find suitable material properties for the model, monotonic axial tensile tests up to the failure are carried out. Tests are conducted on specimens of the three most common types of European structural steel S235, S275, and S355. The basis of the model represents a mathematical description of material single crystal monotonic axial behavior. In the multilinear mechanical model, a drop in stress, after achieving ultimate stress under tension is achieved by a negative stiffness element. The good agreement with experimental results is accomplished by parallel connection of infinitely many single crystal elements, forming the polycrystalline model. The model represents a good solution for common engineering practice due to its geometrical representation in form of Preisach triangle.
PB  - Budapest University of Technology and Economics
T2  - Periodica Polytechnica Civil Engineering
T1  - A Preisach Model for Monotonic Tension Response of Structural Mild Steel with Damage
EP  - 303
IS  - 1
SP  - 296
VL  - 64
DO  - 10.3311/PPci.14809
ER  - 

@article{
author = "Knežević, Petar and Šumarac, Dragoslav and Perović, Zoran and Dolićanin, Ćemal and Burzić, Zijah",
year = "2020",
abstract = "This paper presents the new type of Preisach model that describes the elastoplastic behavior of structural mild steel under axial monotonic tension load with damage. Newly developed model takes into account elastic region, horizontal yield plateau, plastic hardening region, and softening region due to material damage under tension. In order to study the monotonic behavior of structural mild steel and find suitable material properties for the model, monotonic axial tensile tests up to the failure are carried out. Tests are conducted on specimens of the three most common types of European structural steel S235, S275, and S355. The basis of the model represents a mathematical description of material single crystal monotonic axial behavior. In the multilinear mechanical model, a drop in stress, after achieving ultimate stress under tension is achieved by a negative stiffness element. The good agreement with experimental results is accomplished by parallel connection of infinitely many single crystal elements, forming the polycrystalline model. The model represents a good solution for common engineering practice due to its geometrical representation in form of Preisach triangle.",
publisher = "Budapest University of Technology and Economics",
journal = "Periodica Polytechnica Civil Engineering",
title = "A Preisach Model for Monotonic Tension Response of Structural Mild Steel with Damage",
pages = "303-296",
number = "1",
volume = "64",
doi = "10.3311/PPci.14809"
}

Knežević, P., Šumarac, D., Perović, Z., Dolićanin, Ć.,& Burzić, Z.. (2020). A Preisach Model for Monotonic Tension Response of Structural Mild Steel with Damage. in Periodica Polytechnica Civil Engineering
Budapest University of Technology and Economics., 64(1), 296-303.
https://doi.org/10.3311/PPci.14809

Knežević P, Šumarac D, Perović Z, Dolićanin Ć, Burzić Z. A Preisach Model for Monotonic Tension Response of Structural Mild Steel with Damage. in Periodica Polytechnica Civil Engineering. 2020;64(1):296-303.
doi:10.3311/PPci.14809 .

Knežević, Petar, Šumarac, Dragoslav, Perović, Zoran, Dolićanin, Ćemal, Burzić, Zijah, "A Preisach Model for Monotonic Tension Response of Structural Mild Steel with Damage" in Periodica Polytechnica Civil Engineering, 64, no. 1 (2020):296-303,
https://doi.org/10.3311/PPci.14809 . .

TY  - CONF
AU  - Isaković, Snežana
AU  - Perović, Zoran
AU  - Ćorić, Stanko
AU  - Šumarac, Dragoslav
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2854
AB  - Improving the energy efficiency in buildings in the Republic of Serbia has been recognized as an area with the greatest potential for reducing overall energy consumption. It also has an indirect impact on improving the quality of life and comfort in buildings, protecting the environment and reducing the emission of harmful gases, as well as reducing the cost of heating. Permanent population increase resulted in the urbanization process that had different consequences for the quality of life and a sustainable future. Green roofs in urban areas of developed countries have become a legal obligation and policies and programs that support the greening of roofs are aimed at preserving the environment and ensuring the sustainable development of cities. This paper deals with an analysis of the influence of green roofs on the energy performance of existing buildings in the center of Belgrade. One of the conclusions of this research points out that it is necessary to perform research studies and experimental analyses for the application of green roofs in our climatic conditions. Thus, the research focus should be on legal regulation that would establish calculation and design standards for green roof systems.
PB  - Faculty Of Civil Engineering Subotica
C3  - 7th International Conference Contemporary Achievements in Civil Engineering
T1  - Enhancing energy efficiency by application of green roof in residential building
EP  - 484
SP  - 475
DO  - 10.14415/konferencijaGFS2019.042
ER  - 

@conference{
author = "Isaković, Snežana and Perović, Zoran and Ćorić, Stanko and Šumarac, Dragoslav",
year = "2019",
abstract = "Improving the energy efficiency in buildings in the Republic of Serbia has been recognized as an area with the greatest potential for reducing overall energy consumption. It also has an indirect impact on improving the quality of life and comfort in buildings, protecting the environment and reducing the emission of harmful gases, as well as reducing the cost of heating. Permanent population increase resulted in the urbanization process that had different consequences for the quality of life and a sustainable future. Green roofs in urban areas of developed countries have become a legal obligation and policies and programs that support the greening of roofs are aimed at preserving the environment and ensuring the sustainable development of cities. This paper deals with an analysis of the influence of green roofs on the energy performance of existing buildings in the center of Belgrade. One of the conclusions of this research points out that it is necessary to perform research studies and experimental analyses for the application of green roofs in our climatic conditions. Thus, the research focus should be on legal regulation that would establish calculation and design standards for green roof systems.",
publisher = "Faculty Of Civil Engineering Subotica",
journal = "7th International Conference Contemporary Achievements in Civil Engineering",
title = "Enhancing energy efficiency by application of green roof in residential building",
pages = "484-475",
doi = "10.14415/konferencijaGFS2019.042"
}

Isaković, S., Perović, Z., Ćorić, S.,& Šumarac, D.. (2019). Enhancing energy efficiency by application of green roof in residential building. in 7th International Conference Contemporary Achievements in Civil Engineering
Faculty Of Civil Engineering Subotica., 475-484.
https://doi.org/10.14415/konferencijaGFS2019.042

Isaković S, Perović Z, Ćorić S, Šumarac D. Enhancing energy efficiency by application of green roof in residential building. in 7th International Conference Contemporary Achievements in Civil Engineering. 2019;:475-484.
doi:10.14415/konferencijaGFS2019.042 .

Isaković, Snežana, Perović, Zoran, Ćorić, Stanko, Šumarac, Dragoslav, "Enhancing energy efficiency by application of green roof in residential building" in 7th International Conference Contemporary Achievements in Civil Engineering (2019):475-484,
https://doi.org/10.14415/konferencijaGFS2019.042 . .

TY  - CONF
AU  - Šumarac, Dragoslav
AU  - Perović, Zoran
AU  - Ćorić, Stanko
AU  - Isaković, Snežana
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2869
AB  - This paper presents the analysis of the potential use of green roofs to enhance the energy efficiency of the residential buildings. Namely, in urban areas, there is a lot of potential for reducing the energy needed for heating and cooling in the existing buildings. Thus, in developed countries, green roofs are recognized as one of the important tools for energy savings, but also in accomplishing environmental protection and raising the quality of life. Current regulation in the Republic of Serbia does not adequately demonstrate the effects of contemporary measures of energy efficiency improvement in buildings. This paper provides an analysis of the possible improvement of energy efficiency by various green roof application models. The aim of this investigation is to generate affirmation of the green roof projects by pointing out the financial benefits and other implications that are significant for sustainable development. The existing building in the center of Belgrade with a flat roof is used as the model for parametric analysis. The key indicator of the investment profitability in this investigation was the energy needed for heating and cooling. Besides the economic impact, other aspects of green roof application are highlighted as well. Numerical analysis is performed for the apartment under a flat roof for three different models of renovation. The values of the reduction of the annual energy need for heating and cooling are compared. The economic profitability analysis considered the life cycle profit analysis for all analyzed cases. The obtained results indicate the benefits of using green roofs at both, the individual and the public levels.
PB  - Serbian Union of Mechanical and Electrical Engineering (SMEITS)
C3  - 50. International HVAC&R congress
T1  - Application of green roof for increasing the energy efficiency of the existing building in Belgrade
EP  - 351
SP  - 347
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2869
ER  - 

@conference{
author = "Šumarac, Dragoslav and Perović, Zoran and Ćorić, Stanko and Isaković, Snežana",
year = "2019",
abstract = "This paper presents the analysis of the potential use of green roofs to enhance the energy efficiency of the residential buildings. Namely, in urban areas, there is a lot of potential for reducing the energy needed for heating and cooling in the existing buildings. Thus, in developed countries, green roofs are recognized as one of the important tools for energy savings, but also in accomplishing environmental protection and raising the quality of life. Current regulation in the Republic of Serbia does not adequately demonstrate the effects of contemporary measures of energy efficiency improvement in buildings. This paper provides an analysis of the possible improvement of energy efficiency by various green roof application models. The aim of this investigation is to generate affirmation of the green roof projects by pointing out the financial benefits and other implications that are significant for sustainable development. The existing building in the center of Belgrade with a flat roof is used as the model for parametric analysis. The key indicator of the investment profitability in this investigation was the energy needed for heating and cooling. Besides the economic impact, other aspects of green roof application are highlighted as well. Numerical analysis is performed for the apartment under a flat roof for three different models of renovation. The values of the reduction of the annual energy need for heating and cooling are compared. The economic profitability analysis considered the life cycle profit analysis for all analyzed cases. The obtained results indicate the benefits of using green roofs at both, the individual and the public levels.",
publisher = "Serbian Union of Mechanical and Electrical Engineering (SMEITS)",
journal = "50. International HVAC&R congress",
title = "Application of green roof for increasing the energy efficiency of the existing building in Belgrade",
pages = "351-347",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2869"
}

Šumarac, D., Perović, Z., Ćorić, S.,& Isaković, S.. (2019). Application of green roof for increasing the energy efficiency of the existing building in Belgrade. in 50. International HVAC&R congress
Serbian Union of Mechanical and Electrical Engineering (SMEITS)., 347-351.
https://hdl.handle.net/21.15107/rcub_grafar_2869

Šumarac D, Perović Z, Ćorić S, Isaković S. Application of green roof for increasing the energy efficiency of the existing building in Belgrade. in 50. International HVAC&R congress. 2019;:347-351.
https://hdl.handle.net/21.15107/rcub_grafar_2869 .

Šumarac, Dragoslav, Perović, Zoran, Ćorić, Stanko, Isaković, Snežana, "Application of green roof for increasing the energy efficiency of the existing building in Belgrade" in 50. International HVAC&R congress (2019):347-351,
https://hdl.handle.net/21.15107/rcub_grafar_2869 .

TY  - CONF
AU  - Perović, Zoran
AU  - Šumarac, Dragoslav
PY  - 2017
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1547
PB  - Serbian Society of Mechanics ; Faculty of Mechanical Engineering, University of Belgrade,Belgrade, Belgrade
C3  - Proceedings / The 6th International Congress of Serbian Society of Mechanics, Tara, June 19-21, 2017
T1  - Elastoplastic analysis of frame structures subjected to cyclic loading
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1547
ER  - 

@conference{
author = "Perović, Zoran and Šumarac, Dragoslav",
year = "2017",
publisher = "Serbian Society of Mechanics ; Faculty of Mechanical Engineering, University of Belgrade,Belgrade, Belgrade",
journal = "Proceedings / The 6th International Congress of Serbian Society of Mechanics, Tara, June 19-21, 2017",
title = "Elastoplastic analysis of frame structures subjected to cyclic loading",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1547"
}

Perović, Z.,& Šumarac, D.. (2017). Elastoplastic analysis of frame structures subjected to cyclic loading. in Proceedings / The 6th International Congress of Serbian Society of Mechanics, Tara, June 19-21, 2017
Serbian Society of Mechanics ; Faculty of Mechanical Engineering, University of Belgrade,Belgrade, Belgrade..
https://hdl.handle.net/21.15107/rcub_grafar_1547

Perović Z, Šumarac D. Elastoplastic analysis of frame structures subjected to cyclic loading. in Proceedings / The 6th International Congress of Serbian Society of Mechanics, Tara, June 19-21, 2017. 2017;.
https://hdl.handle.net/21.15107/rcub_grafar_1547 .

Perović, Zoran, Šumarac, Dragoslav, "Elastoplastic analysis of frame structures subjected to cyclic loading" in Proceedings / The 6th International Congress of Serbian Society of Mechanics, Tara, June 19-21, 2017 (2017),
https://hdl.handle.net/21.15107/rcub_grafar_1547 .

TY  - CONF
AU  - Perović, Zoran
AU  - Šumarac, Dragoslav
PY  - 2017
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1529
AB  - In this paper, three dimensional frame structures, subjected to cyclic loading are analyzed. In numerical examples, rectangular and I cross section shapes are used for elements of structures subjected to various loading cases. For definition of material behavior, elastoplastic model of material, based on the Preisach model of hysteresis is used. Some aspects of convergence, as well as numerical performance of this analysis are shown.
C3  - Zbornik radova 5. međunarodne konferencije Savremena dostignuća u građevinarstvu 2017
T1  - Three-dimensional frame structures subjected to cyclic loading
T1  - Prostorne ramovske konstrukcije pri cikličnom opterećenju
EP  - 376
SP  - 369
VL  - 33
DO  - 10.14415/konferencijaGFS2017.038
ER  - 

@conference{
author = "Perović, Zoran and Šumarac, Dragoslav",
year = "2017",
abstract = "In this paper, three dimensional frame structures, subjected to cyclic loading are analyzed. In numerical examples, rectangular and I cross section shapes are used for elements of structures subjected to various loading cases. For definition of material behavior, elastoplastic model of material, based on the Preisach model of hysteresis is used. Some aspects of convergence, as well as numerical performance of this analysis are shown.",
journal = "Zbornik radova 5. međunarodne konferencije Savremena dostignuća u građevinarstvu 2017",
title = "Three-dimensional frame structures subjected to cyclic loading, Prostorne ramovske konstrukcije pri cikličnom opterećenju",
pages = "376-369",
volume = "33",
doi = "10.14415/konferencijaGFS2017.038"
}

Perović, Z.,& Šumarac, D.. (2017). Three-dimensional frame structures subjected to cyclic loading. in Zbornik radova 5. međunarodne konferencije Savremena dostignuća u građevinarstvu 2017, 33, 369-376.
https://doi.org/10.14415/konferencijaGFS2017.038

Perović Z, Šumarac D. Three-dimensional frame structures subjected to cyclic loading. in Zbornik radova 5. međunarodne konferencije Savremena dostignuća u građevinarstvu 2017. 2017;33:369-376.
doi:10.14415/konferencijaGFS2017.038 .

Perović, Zoran, Šumarac, Dragoslav, "Three-dimensional frame structures subjected to cyclic loading" in Zbornik radova 5. međunarodne konferencije Savremena dostignuća u građevinarstvu 2017, 33 (2017):369-376,
https://doi.org/10.14415/konferencijaGFS2017.038 . .

TY  - THES
AU  - Perović, Zoran
PY  - 2016
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=4858
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:15211/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=513734290
UR  - http://nardus.mpn.gov.rs/123456789/7954
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1689
AB  - U ovoj doktorskoj disertaciji je razmatrano ponašanje rešetkastih konstrukcija u plastičnojoblasti sa ciljem da se optimizuje numerička analiza ovog problema i da se definiše osnovaza proširivanje odgovarajućeg modela na gredne elemente linijskih nosača. Ovaj problem,pri cikličnom opterećenju, dobija novu dimenziju u pogledu tačnosti rezultata nakonodređenog broja ciklusa, kao i u pogledu numeričke zahtevnosti odgovarajućeg modela.Model materijala zasnovan na Prajzakovom (Preisach) histerezisnom operatoru, određenkao analitički izraz za vezu napon-deformacija, omogućava numerički efektno modeliranjejednoaksijalnog ponašanja materijala. Koristeći ovaj model, u ovoj disertaciji su definisanejednačine u metodi konačnih elemenata za elastoplastičnu analizu rešetkastih nosača pricikličnom opterećenju i na osnovu toga je definisan algoritam za proračun u programskomjeziku c++.Za validaciju rezultata i analizu numeričkih karakteristika proračuna zasnovanog na modelumaterijala koji je korišćen u disertaciji, u numeričkim primerima su poređeni rezultatidobijeni predmetnim modelom sa rezultatima dobijenim koristeći drugi histerezisnioperator (Bouc-Wen) i rezultatima dobijenim koristeći jedan od klasičnih modelaplastičnosti (model generalisane plastičnosti).Geometrijska nelinearnost je uzeta u obzir poznatim metodama i definisana u delunumeričkih primera. Stanje napona u materijalu koji se analizira je jednoaksijalno, a unumeričkim primerima sa grednim elementima je usvojena hipoteza o ravnim presecima.Pored postojećeg (Prajzakovog) modela za elastoplastično ponašanje materijala, u ovojdisertaciji je definisan model oštećenja u materijalu preko dva pristupa. U prvom pristupu,definisani histerezisni operator za elastoplastično ponašanje materijala je modifikovan kakobi mogao da modelira oštećenje u materijalu. U drugom pristupu, u definisani algoritamproračuna metode konačnih elemenata predmetnog modela elastoplastičnosti je uvedenfenomen oštećenja korišćenjem osnovnih principa mehanike kontinuuma sa oštećenjem.Pored toga, predstavljen je model za proračun histerezisnog gubitka energije u rešetkastimkonstrukcijama, zasnovan na predmetnom modelu, kao i osnova za proširenje analize nagredne nosače koristeći numeričku integraciju napona u poprečnom preseku za jednostavneslučajeve savijanja...
AB  - In this doctoral dissertation, behavior of trusses in plastic domain is investigated in order tooptimize numerical analysis of this problem and to define foundation for extendingproposed model to the analysis of beam elements. New dimension in this problem arise inthe case of the cyclic loading, relating to the accuracy of results after certain number ofcycles and computational effort of corresponding model. Material model based on thePreisach hysteretic operator, determined as analytical expression for stress-strain relation,enables numerically effective modeling of uniaxial material behavior. By using this model,in this dissertation, finite element equations for elastoplastic analysis of trusses subjected tocyclic loading are determined, which lead to definition of algorithm for numerical analysisin c++ programming language.In order to validate results and to analyze numerical performance of calculation based onthe material model used in this dissertation, in numerical examples, results obtained byanalyzed (Preisach) model are compared with results obtained by using other hystereticoperator (Bouc-Wen) and also with results obtained by using one of the classical model ofplasticity (generalized plasticity model).Geometric nonlinearity is taken into account by well established methods, and it wasdefined in several numerical examples. Stress state in analyzed material is uniaxial, and innumerical examples with beam elements, the assumption of engineering beam theory isadopted (cross section is perpendicular to a bending line).Besides existing (Preisach) model for elastoplastic material behavior, in this dissertationdamage model in material is defined through two approaches. In the first approach,proposed hysteretic operator for elastoplastic behavior is modified, so that it would have thepossibility to model the damage in material. In the second approach, in proposed finiteelement algorithm for elastoplastic analysis, phenomenon of damage is introduced by usingthe basic principles of continuum damage mechanics.In addition, model for calculation of hysteretic energy loss in truss structures, based on theconsidered model, is presented, and finally, the foundation for extending the correspondinganalysis on beam elements, by using numerical integration of normal stress in cross section,for simple cases of loading, is proposed...
PB  - Универзитет у Београду, Грађевински факултет
T2  - Универзитет у Београду
T1  - Elastoplastična analiza rešetkastih nosača sa oštećenjem pri cikličnom opterećenju
UR  - https://hdl.handle.net/21.15107/rcub_nardus_7954
ER  - 

@phdthesis{
author = "Perović, Zoran",
year = "2016",
abstract = "U ovoj doktorskoj disertaciji je razmatrano ponašanje rešetkastih konstrukcija u plastičnojoblasti sa ciljem da se optimizuje numerička analiza ovog problema i da se definiše osnovaza proširivanje odgovarajućeg modela na gredne elemente linijskih nosača. Ovaj problem,pri cikličnom opterećenju, dobija novu dimenziju u pogledu tačnosti rezultata nakonodređenog broja ciklusa, kao i u pogledu numeričke zahtevnosti odgovarajućeg modela.Model materijala zasnovan na Prajzakovom (Preisach) histerezisnom operatoru, određenkao analitički izraz za vezu napon-deformacija, omogućava numerički efektno modeliranjejednoaksijalnog ponašanja materijala. Koristeći ovaj model, u ovoj disertaciji su definisanejednačine u metodi konačnih elemenata za elastoplastičnu analizu rešetkastih nosača pricikličnom opterećenju i na osnovu toga je definisan algoritam za proračun u programskomjeziku c++.Za validaciju rezultata i analizu numeričkih karakteristika proračuna zasnovanog na modelumaterijala koji je korišćen u disertaciji, u numeričkim primerima su poređeni rezultatidobijeni predmetnim modelom sa rezultatima dobijenim koristeći drugi histerezisnioperator (Bouc-Wen) i rezultatima dobijenim koristeći jedan od klasičnih modelaplastičnosti (model generalisane plastičnosti).Geometrijska nelinearnost je uzeta u obzir poznatim metodama i definisana u delunumeričkih primera. Stanje napona u materijalu koji se analizira je jednoaksijalno, a unumeričkim primerima sa grednim elementima je usvojena hipoteza o ravnim presecima.Pored postojećeg (Prajzakovog) modela za elastoplastično ponašanje materijala, u ovojdisertaciji je definisan model oštećenja u materijalu preko dva pristupa. U prvom pristupu,definisani histerezisni operator za elastoplastično ponašanje materijala je modifikovan kakobi mogao da modelira oštećenje u materijalu. U drugom pristupu, u definisani algoritamproračuna metode konačnih elemenata predmetnog modela elastoplastičnosti je uvedenfenomen oštećenja korišćenjem osnovnih principa mehanike kontinuuma sa oštećenjem.Pored toga, predstavljen je model za proračun histerezisnog gubitka energije u rešetkastimkonstrukcijama, zasnovan na predmetnom modelu, kao i osnova za proširenje analize nagredne nosače koristeći numeričku integraciju napona u poprečnom preseku za jednostavneslučajeve savijanja..., In this doctoral dissertation, behavior of trusses in plastic domain is investigated in order tooptimize numerical analysis of this problem and to define foundation for extendingproposed model to the analysis of beam elements. New dimension in this problem arise inthe case of the cyclic loading, relating to the accuracy of results after certain number ofcycles and computational effort of corresponding model. Material model based on thePreisach hysteretic operator, determined as analytical expression for stress-strain relation,enables numerically effective modeling of uniaxial material behavior. By using this model,in this dissertation, finite element equations for elastoplastic analysis of trusses subjected tocyclic loading are determined, which lead to definition of algorithm for numerical analysisin c++ programming language.In order to validate results and to analyze numerical performance of calculation based onthe material model used in this dissertation, in numerical examples, results obtained byanalyzed (Preisach) model are compared with results obtained by using other hystereticoperator (Bouc-Wen) and also with results obtained by using one of the classical model ofplasticity (generalized plasticity model).Geometric nonlinearity is taken into account by well established methods, and it wasdefined in several numerical examples. Stress state in analyzed material is uniaxial, and innumerical examples with beam elements, the assumption of engineering beam theory isadopted (cross section is perpendicular to a bending line).Besides existing (Preisach) model for elastoplastic material behavior, in this dissertationdamage model in material is defined through two approaches. In the first approach,proposed hysteretic operator for elastoplastic behavior is modified, so that it would have thepossibility to model the damage in material. In the second approach, in proposed finiteelement algorithm for elastoplastic analysis, phenomenon of damage is introduced by usingthe basic principles of continuum damage mechanics.In addition, model for calculation of hysteretic energy loss in truss structures, based on theconsidered model, is presented, and finally, the foundation for extending the correspondinganalysis on beam elements, by using numerical integration of normal stress in cross section,for simple cases of loading, is proposed...",
publisher = "Универзитет у Београду, Грађевински факултет",
journal = "Универзитет у Београду",
title = "Elastoplastična analiza rešetkastih nosača sa oštećenjem pri cikličnom opterećenju",
url = "https://hdl.handle.net/21.15107/rcub_nardus_7954"
}

Perović, Z.. (2016). Elastoplastična analiza rešetkastih nosača sa oštećenjem pri cikličnom opterećenju. in Универзитет у Београду
Универзитет у Београду, Грађевински факултет..
https://hdl.handle.net/21.15107/rcub_nardus_7954

Perović Z. Elastoplastična analiza rešetkastih nosača sa oštećenjem pri cikličnom opterećenju. in Универзитет у Београду. 2016;.
https://hdl.handle.net/21.15107/rcub_nardus_7954 .

Perović, Zoran, "Elastoplastična analiza rešetkastih nosača sa oštećenjem pri cikličnom opterećenju" in Универзитет у Београду (2016),
https://hdl.handle.net/21.15107/rcub_nardus_7954 .

TY  - CONF
AU  - Ćorić, Stanko
AU  - Perović, Zoran
AU  - Šumarac, Dragoslav
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1485
AB  - Although there are a large number of buildings with high energy consumption in Serbia, there is a possibility to reduce it by investing in renovation of such buildings. Windows and doors, which are part of thermal envelope of building, play a very important role in the overall energy efficiency of the building. In this paper, some aspects of reducing energy consumption of buildings in urban area are presented through renovation project and experimental measurements. The results of increased energy efficiency of one public building, obtained by changing doors and windows only, are given. Experimental measurements by thermovision camera in several residential buildings are shown in this paper. These measurements indicate importance of installing adequate windows as part of thermal envelope of buildings. In addition, corresponding data, from overall state of energy efficiency of buildings in Serbia, is presented.
PB  - Građevinski fakultet, Subotica
C3  - Zbornik radova 4. Međunarodne konferencije Savremena dostignuća u građevinarstvu 2016
T1  - Improvement of energy efficiency of buildings in urban areas
EP  - 880
SP  - 873
DO  - 10.14415/konferencijaGFS
ER  - 

@conference{
author = "Ćorić, Stanko and Perović, Zoran and Šumarac, Dragoslav",
year = "2016",
abstract = "Although there are a large number of buildings with high energy consumption in Serbia, there is a possibility to reduce it by investing in renovation of such buildings. Windows and doors, which are part of thermal envelope of building, play a very important role in the overall energy efficiency of the building. In this paper, some aspects of reducing energy consumption of buildings in urban area are presented through renovation project and experimental measurements. The results of increased energy efficiency of one public building, obtained by changing doors and windows only, are given. Experimental measurements by thermovision camera in several residential buildings are shown in this paper. These measurements indicate importance of installing adequate windows as part of thermal envelope of buildings. In addition, corresponding data, from overall state of energy efficiency of buildings in Serbia, is presented.",
publisher = "Građevinski fakultet, Subotica",
journal = "Zbornik radova 4. Međunarodne konferencije Savremena dostignuća u građevinarstvu 2016",
title = "Improvement of energy efficiency of buildings in urban areas",
pages = "880-873",
doi = "10.14415/konferencijaGFS"
}

Ćorić, S., Perović, Z.,& Šumarac, D.. (2016). Improvement of energy efficiency of buildings in urban areas. in Zbornik radova 4. Međunarodne konferencije Savremena dostignuća u građevinarstvu 2016
Građevinski fakultet, Subotica., 873-880.
https://doi.org/10.14415/konferencijaGFS

Ćorić S, Perović Z, Šumarac D. Improvement of energy efficiency of buildings in urban areas. in Zbornik radova 4. Međunarodne konferencije Savremena dostignuća u građevinarstvu 2016. 2016;:873-880.
doi:10.14415/konferencijaGFS .

Ćorić, Stanko, Perović, Zoran, Šumarac, Dragoslav, "Improvement of energy efficiency of buildings in urban areas" in Zbornik radova 4. Međunarodne konferencije Savremena dostignuća u građevinarstvu 2016 (2016):873-880,
https://doi.org/10.14415/konferencijaGFS . .

TY  - CONF
AU  - Šumarac, Dragoslav
AU  - Perović, Zoran
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1358
AB  - In the present paper, the Preisach model of hysteresis is extended to structural analysis of trusses damaged under cyclic loading in plastic range. Parameters for the Preisach model of cyclic plasticity are obtained from uniaxial loading experiment. Damage, as a consequence of micro cracks appearance due to alternating loading in plastic domain, is modeled using brittle elements according to Preisach procedure. Results of this research are compared with the already existing in the literature. In the paper examples of trusses under various cyclic loadings are presented.
PB  - Trans Tech Publications Ltd.,
C3  - Damage Mechanics: Theory, Computation and Practice
T1  - Elastoplastic and Damage Analysis of Trusses Subjected to Cyclic Loading
EP  - 79
SP  - 68
VL  - 784
DO  - 10.4028/www.scientific.net/AMM.784.68
ER  - 

@conference{
author = "Šumarac, Dragoslav and Perović, Zoran",
year = "2015",
abstract = "In the present paper, the Preisach model of hysteresis is extended to structural analysis of trusses damaged under cyclic loading in plastic range. Parameters for the Preisach model of cyclic plasticity are obtained from uniaxial loading experiment. Damage, as a consequence of micro cracks appearance due to alternating loading in plastic domain, is modeled using brittle elements according to Preisach procedure. Results of this research are compared with the already existing in the literature. In the paper examples of trusses under various cyclic loadings are presented.",
publisher = "Trans Tech Publications Ltd.,",
journal = "Damage Mechanics: Theory, Computation and Practice",
title = "Elastoplastic and Damage Analysis of Trusses Subjected to Cyclic Loading",
pages = "79-68",
volume = "784",
doi = "10.4028/www.scientific.net/AMM.784.68"
}

Šumarac, D.,& Perović, Z.. (2015). Elastoplastic and Damage Analysis of Trusses Subjected to Cyclic Loading. in Damage Mechanics: Theory, Computation and Practice
Trans Tech Publications Ltd.,., 784, 68-79.
https://doi.org/10.4028/www.scientific.net/AMM.784.68

Šumarac D, Perović Z. Elastoplastic and Damage Analysis of Trusses Subjected to Cyclic Loading. in Damage Mechanics: Theory, Computation and Practice. 2015;784:68-79.
doi:10.4028/www.scientific.net/AMM.784.68 .

Šumarac, Dragoslav, Perović, Zoran, "Elastoplastic and Damage Analysis of Trusses Subjected to Cyclic Loading" in Damage Mechanics: Theory, Computation and Practice, 784 (2015):68-79,
https://doi.org/10.4028/www.scientific.net/AMM.784.68 . .

TY  - CONF
AU  - Perović, Zoran
AU  - Šumarac, Dragoslav
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1272
PB  - Belgrade ; Novi Sad
C3  - Proceedings / The 5th International Congress of Serbian Society of Mechanics, Arandjelovac, June 15-17, 2015
T1  - Damage of Trusses due to Cyclic Plasticity
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1272
ER  - 

@conference{
author = "Perović, Zoran and Šumarac, Dragoslav",
year = "2015",
publisher = "Belgrade ; Novi Sad",
journal = "Proceedings / The 5th International Congress of Serbian Society of Mechanics, Arandjelovac, June 15-17, 2015",
title = "Damage of Trusses due to Cyclic Plasticity",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1272"
}

Perović, Z.,& Šumarac, D.. (2015). Damage of Trusses due to Cyclic Plasticity. in Proceedings / The 5th International Congress of Serbian Society of Mechanics, Arandjelovac, June 15-17, 2015
Belgrade ; Novi Sad..
https://hdl.handle.net/21.15107/rcub_grafar_1272

Perović Z, Šumarac D. Damage of Trusses due to Cyclic Plasticity. in Proceedings / The 5th International Congress of Serbian Society of Mechanics, Arandjelovac, June 15-17, 2015. 2015;.
https://hdl.handle.net/21.15107/rcub_grafar_1272 .

Perović, Zoran, Šumarac, Dragoslav, "Damage of Trusses due to Cyclic Plasticity" in Proceedings / The 5th International Congress of Serbian Society of Mechanics, Arandjelovac, June 15-17, 2015 (2015),
https://hdl.handle.net/21.15107/rcub_grafar_1272 .

TY  - JOUR
AU  - Šumarac, Dragoslav
AU  - Perović, Zoran
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/678
AB  - In this paper, the Preisach model of hysteresis, which was already successfully implemented for solving problems of cyclic plasticity of axially loaded bar and cyclic bending of elastoplastic beam, is extended to the structural analysis of trusses subjected to cyclic loading. Although there are numerous well-known models of cyclic plasticity defined, in this paper, it is shown that for uniaxial stress state, hysteresis can be defined, based on the experimental data, in one particular rigorously mathematical form and implemented in finite element equations for trusses subjected to cyclic loading in the plastic domain. Using finite element method, equilibrium equations are obtained and algorithm for numerical solution is defined. Some advantages of this approach are underlined, compared with already existing procedures, such as the Bouc-Wen model implemented in SAP2000 program and generalized plasticity model shown on various numerical examples.
PB  - Springer Verlag
T2  - Archive of Applied Mechanics
T1  - Cyclic plasticity of trusses
EP  - 1526
IS  - 9-10
SP  - 1513
VL  - 85
DO  - 10.1007/s00419-014-0954-7
ER  - 

@article{
author = "Šumarac, Dragoslav and Perović, Zoran",
year = "2015",
abstract = "In this paper, the Preisach model of hysteresis, which was already successfully implemented for solving problems of cyclic plasticity of axially loaded bar and cyclic bending of elastoplastic beam, is extended to the structural analysis of trusses subjected to cyclic loading. Although there are numerous well-known models of cyclic plasticity defined, in this paper, it is shown that for uniaxial stress state, hysteresis can be defined, based on the experimental data, in one particular rigorously mathematical form and implemented in finite element equations for trusses subjected to cyclic loading in the plastic domain. Using finite element method, equilibrium equations are obtained and algorithm for numerical solution is defined. Some advantages of this approach are underlined, compared with already existing procedures, such as the Bouc-Wen model implemented in SAP2000 program and generalized plasticity model shown on various numerical examples.",
publisher = "Springer Verlag",
journal = "Archive of Applied Mechanics",
title = "Cyclic plasticity of trusses",
pages = "1526-1513",
number = "9-10",
volume = "85",
doi = "10.1007/s00419-014-0954-7"
}

Šumarac, D.,& Perović, Z.. (2015). Cyclic plasticity of trusses. in Archive of Applied Mechanics
Springer Verlag., 85(9-10), 1513-1526.
https://doi.org/10.1007/s00419-014-0954-7

Šumarac D, Perović Z. Cyclic plasticity of trusses. in Archive of Applied Mechanics. 2015;85(9-10):1513-1526.
doi:10.1007/s00419-014-0954-7 .

Šumarac, Dragoslav, Perović, Zoran, "Cyclic plasticity of trusses" in Archive of Applied Mechanics, 85, no. 9-10 (2015):1513-1526,
https://doi.org/10.1007/s00419-014-0954-7 . .

TY  - CONF
AU  - Šumarac, Dragoslav
AU  - Todorović, Maja
AU  - Ćorić, Stanko
AU  - Perović, Zoran
AU  - Hamidović, Ervin
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1204
PB  - Univerzitet Crne Gore, Građevinski fakultet, Podgorica
C3  - Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa
T1  - Energy efficiency of buildings in Serbia
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1204
ER  - 

@conference{
author = "Šumarac, Dragoslav and Todorović, Maja and Ćorić, Stanko and Perović, Zoran and Hamidović, Ervin",
year = "2014",
publisher = "Univerzitet Crne Gore, Građevinski fakultet, Podgorica",
journal = "Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa",
title = "Energy efficiency of buildings in Serbia",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1204"
}

Šumarac, D., Todorović, M., Ćorić, S., Perović, Z.,& Hamidović, E.. (2014). Energy efficiency of buildings in Serbia. in Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa
Univerzitet Crne Gore, Građevinski fakultet, Podgorica..
https://hdl.handle.net/21.15107/rcub_grafar_1204

Šumarac D, Todorović M, Ćorić S, Perović Z, Hamidović E. Energy efficiency of buildings in Serbia. in Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa. 2014;.
https://hdl.handle.net/21.15107/rcub_grafar_1204 .

Šumarac, Dragoslav, Todorović, Maja, Ćorić, Stanko, Perović, Zoran, Hamidović, Ervin, "Energy efficiency of buildings in Serbia" in Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa (2014),
https://hdl.handle.net/21.15107/rcub_grafar_1204 .

TY  - JOUR
AU  - Perović, Zoran
AU  - Šumarac, Dragoslav
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/598
AB  - In the present paper, implementation of Preisach model of hysteresis to elastoplastic analysis of trusses subjected to cyclic is shown. It is also shown that damage effects can be included in presented analysis by introducing basic concepts of continuum damage mechanics. Using finite element method, equilibrium equations are obtained and algorithm for numerical solution is defined. Some advantages of this approach are underlined through several numerical examples.
AB  - U ovom radu, prikazana je primena Prajzakovog modela histerezisa, u strukturnoj analizi rešetkastih nosača koji su izloženi cikličnom opterećenju. Takođe je prikazano da se efekti oštećenja mogu uključiti u prikazanu analizu uvođenjem osnovnih principa mehanike oštećenja u kontinuumu. Koristeći metodu konačnih elemenata, jednačine ravnoteže i algoritam za numeričko rešavanje je definisan. Neke prednosti ovakvog pristupa su naglašene kroz nekoliko numeričkih primera.
PB  - Univerzitet u Novom Sadu - Građevinski fakultet, Subotica
T2  - Zbornik radova Građevinskog fakulteta, Subotica
T1  - Elastoplastic damage analysis of trusses subjected to cyclic loading
T1  - Elastoplastična analiza oštećenja rešetkastih nosača pri cikličnom opterećenju
EP  - 83
IS  - 24
SP  - 77
DO  - 10.14415/zbornikGFS24.007
ER  - 

@article{
author = "Perović, Zoran and Šumarac, Dragoslav",
year = "2014",
abstract = "In the present paper, implementation of Preisach model of hysteresis to elastoplastic analysis of trusses subjected to cyclic is shown. It is also shown that damage effects can be included in presented analysis by introducing basic concepts of continuum damage mechanics. Using finite element method, equilibrium equations are obtained and algorithm for numerical solution is defined. Some advantages of this approach are underlined through several numerical examples., U ovom radu, prikazana je primena Prajzakovog modela histerezisa, u strukturnoj analizi rešetkastih nosača koji su izloženi cikličnom opterećenju. Takođe je prikazano da se efekti oštećenja mogu uključiti u prikazanu analizu uvođenjem osnovnih principa mehanike oštećenja u kontinuumu. Koristeći metodu konačnih elemenata, jednačine ravnoteže i algoritam za numeričko rešavanje je definisan. Neke prednosti ovakvog pristupa su naglašene kroz nekoliko numeričkih primera.",
publisher = "Univerzitet u Novom Sadu - Građevinski fakultet, Subotica",
journal = "Zbornik radova Građevinskog fakulteta, Subotica",
title = "Elastoplastic damage analysis of trusses subjected to cyclic loading, Elastoplastična analiza oštećenja rešetkastih nosača pri cikličnom opterećenju",
pages = "83-77",
number = "24",
doi = "10.14415/zbornikGFS24.007"
}

Perović, Z.,& Šumarac, D.. (2014). Elastoplastic damage analysis of trusses subjected to cyclic loading. in Zbornik radova Građevinskog fakulteta, Subotica
Univerzitet u Novom Sadu - Građevinski fakultet, Subotica.(24), 77-83.
https://doi.org/10.14415/zbornikGFS24.007

Perović Z, Šumarac D. Elastoplastic damage analysis of trusses subjected to cyclic loading. in Zbornik radova Građevinskog fakulteta, Subotica. 2014;(24):77-83.
doi:10.14415/zbornikGFS24.007 .

Perović, Zoran, Šumarac, Dragoslav, "Elastoplastic damage analysis of trusses subjected to cyclic loading" in Zbornik radova Građevinskog fakulteta, Subotica, no. 24 (2014):77-83,
https://doi.org/10.14415/zbornikGFS24.007 . .

TY  - JOUR
AU  - Šumarac, Dragoslav
AU  - Todorović, Maja N.
AU  - Ćorić, Stanko
AU  - Perović, Zoran
PY  - 2012
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/468
AB  - The energy efficiency of typical rural houses in Serbia is presented in this paper. Typical houses from rural areas were analyzed by proper measurements, and by numerical calculations according to current regulations. The first house is a traditional Vojvodina house and it is situated in the suburban part of municipality of Sremska Mitrovica. The second house is a typical Serbian mountainous house and it is located in the municipality of Ra{ka. Experimental data for the analysis were obtained by performing measurements of temperature, humidity and dew point on the characteristic spots in these houses. Recording with thermal imaging camera were also done. Detailed insight in energy performance of observed houses can be defined by analyzing obtained results. Calculation of the annual energy needs for heating is based on the Regulations on energy efficiency of buildings in the Republic of Serbia, which were adopted in 2011. It was concluded that the annual energy need for heating in rural homes significantly exceeds optimal limits for objects of that category, so the special attention should be devoted to analysis of energy efficiency problems in rural areas.
AB  - U ovom radu je prikazano trenutno stanje energetske efikasnosti seoskih kuća u Srbiji. Analizirane su dva tipa kuća iz ruralnih područja putem odgovarajućih merenja, kao i proračunom prema važećim propisima. Prva je tradicionalna vojvođanska kuća koja se nalazi u predgrađu Sremske Mitrovice. Druga je tipična kuća u brdsko-planinskom regionu Srbije i ona se nalazi u opštini Raška. Eksperimentalni podaci za analizu su dobijeni izvršenim merenjima temperature, vlažnosti i tačke rošenja na karakterističnim mestima na objektima. Takođe je obavljeno i snimanje termovizijskom kamerom. Analizom rezultata merenja, može se definisati detaljna slika energetskih karakteristika posmatranih kuća. Proračun godišnje potrebne energije za grejanje je zasnovan na Pravilniku o energetskoj efikasnosti zgrada u Republici Srbiji koji je usvojen 2011. godine. Zaključeno je da godišnja potrošnja energije za grejanje u seoskim kućama znatno prevazilazi utvrđene optimalne granice za objekte te kategorije, tako da posebna pažnja treba da se posveti analizi problema energetske efikasnosti u ruralnim područjima.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd
T2  - Termotehnika
T1  - Energy efficiency of typical Serbian rural houses
T1  - Energetska efikasnost tipičnih srpskih ruralnih kuća
EP  - 203
IS  - 2
SP  - 191
VL  - 38
UR  - https://hdl.handle.net/21.15107/rcub_grafar_468
ER  - 

@article{
author = "Šumarac, Dragoslav and Todorović, Maja N. and Ćorić, Stanko and Perović, Zoran",
year = "2012",
abstract = "The energy efficiency of typical rural houses in Serbia is presented in this paper. Typical houses from rural areas were analyzed by proper measurements, and by numerical calculations according to current regulations. The first house is a traditional Vojvodina house and it is situated in the suburban part of municipality of Sremska Mitrovica. The second house is a typical Serbian mountainous house and it is located in the municipality of Ra{ka. Experimental data for the analysis were obtained by performing measurements of temperature, humidity and dew point on the characteristic spots in these houses. Recording with thermal imaging camera were also done. Detailed insight in energy performance of observed houses can be defined by analyzing obtained results. Calculation of the annual energy needs for heating is based on the Regulations on energy efficiency of buildings in the Republic of Serbia, which were adopted in 2011. It was concluded that the annual energy need for heating in rural homes significantly exceeds optimal limits for objects of that category, so the special attention should be devoted to analysis of energy efficiency problems in rural areas., U ovom radu je prikazano trenutno stanje energetske efikasnosti seoskih kuća u Srbiji. Analizirane su dva tipa kuća iz ruralnih područja putem odgovarajućih merenja, kao i proračunom prema važećim propisima. Prva je tradicionalna vojvođanska kuća koja se nalazi u predgrađu Sremske Mitrovice. Druga je tipična kuća u brdsko-planinskom regionu Srbije i ona se nalazi u opštini Raška. Eksperimentalni podaci za analizu su dobijeni izvršenim merenjima temperature, vlažnosti i tačke rošenja na karakterističnim mestima na objektima. Takođe je obavljeno i snimanje termovizijskom kamerom. Analizom rezultata merenja, može se definisati detaljna slika energetskih karakteristika posmatranih kuća. Proračun godišnje potrebne energije za grejanje je zasnovan na Pravilniku o energetskoj efikasnosti zgrada u Republici Srbiji koji je usvojen 2011. godine. Zaključeno je da godišnja potrošnja energije za grejanje u seoskim kućama znatno prevazilazi utvrđene optimalne granice za objekte te kategorije, tako da posebna pažnja treba da se posveti analizi problema energetske efikasnosti u ruralnim područjima.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd",
journal = "Termotehnika",
title = "Energy efficiency of typical Serbian rural houses, Energetska efikasnost tipičnih srpskih ruralnih kuća",
pages = "203-191",
number = "2",
volume = "38",
url = "https://hdl.handle.net/21.15107/rcub_grafar_468"
}

Šumarac, D., Todorović, M. N., Ćorić, S.,& Perović, Z.. (2012). Energy efficiency of typical Serbian rural houses. in Termotehnika
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd., 38(2), 191-203.
https://hdl.handle.net/21.15107/rcub_grafar_468

Šumarac D, Todorović MN, Ćorić S, Perović Z. Energy efficiency of typical Serbian rural houses. in Termotehnika. 2012;38(2):191-203.
https://hdl.handle.net/21.15107/rcub_grafar_468 .

Šumarac, Dragoslav, Todorović, Maja N., Ćorić, Stanko, Perović, Zoran, "Energy efficiency of typical Serbian rural houses" in Termotehnika, 38, no. 2 (2012):191-203,
https://hdl.handle.net/21.15107/rcub_grafar_468 .