TY  - JOUR
AU  - Stojković, Milan
AU  - Marjanović, Dušan
AU  - Rakić, Dragan
AU  - Ivetić, Damjan
AU  - Simić, Višnja
AU  - Milivojević, Nikola
AU  - Trajković, Slaviša
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3040
AB  - The objective of this research is to propose a novel framework for assessing the consequences of hazardous events on a water resources system using dynamic resilience. Two types of hazardous events were considered: a severe flood event and an earthquake. Given that one or both hazards have occurred and considering the intensity of those events, the main characteristics of flood
 dynamic resilience were evaluated. The framework utilizes an artificial neural network (ANN) to estimate dynamic resilience. The ANN was trained using a large, generated dataset that included a wide range of situations, from relatively mild hazards to severe ones. A case study was performed on the Pirot water system (Serbia). Dynamic resilience was derived from the developed system dynamics model alongside the hazardous models implemented. The most extreme hazard combination results in the robustness of 0.04, indicating a combination of an earthquake with a significant magnitude and a flood hydrograph with a low frequency of occurrence. In the case of moderate hazards, the system robustness has a median value of 0.2 and the rapidity median value of 162 h. The ANN’s efficacy was quantified using the average relative error metric which equals 2.14% and 1.77% for robustness and rapidity, respectively.
PB  - IWA Publishing
T2  - Journal of Hydroinformatics
T1  - Assessment of water resources system resilience under hazardous events using system dynamic approach and artificial neural networks
DO  - 10.2166/hydro.2023.069
ER  - 

@article{
author = "Stojković, Milan and Marjanović, Dušan and Rakić, Dragan and Ivetić, Damjan and Simić, Višnja and Milivojević, Nikola and Trajković, Slaviša",
year = "2023",
abstract = "The objective of this research is to propose a novel framework for assessing the consequences of hazardous events on a water resources system using dynamic resilience. Two types of hazardous events were considered: a severe flood event and an earthquake. Given that one or both hazards have occurred and considering the intensity of those events, the main characteristics of flood
 dynamic resilience were evaluated. The framework utilizes an artificial neural network (ANN) to estimate dynamic resilience. The ANN was trained using a large, generated dataset that included a wide range of situations, from relatively mild hazards to severe ones. A case study was performed on the Pirot water system (Serbia). Dynamic resilience was derived from the developed system dynamics model alongside the hazardous models implemented. The most extreme hazard combination results in the robustness of 0.04, indicating a combination of an earthquake with a significant magnitude and a flood hydrograph with a low frequency of occurrence. In the case of moderate hazards, the system robustness has a median value of 0.2 and the rapidity median value of 162 h. The ANN’s efficacy was quantified using the average relative error metric which equals 2.14% and 1.77% for robustness and rapidity, respectively.",
publisher = "IWA Publishing",
journal = "Journal of Hydroinformatics",
title = "Assessment of water resources system resilience under hazardous events using system dynamic approach and artificial neural networks",
doi = "10.2166/hydro.2023.069"
}

Stojković, M., Marjanović, D., Rakić, D., Ivetić, D., Simić, V., Milivojević, N.,& Trajković, S.. (2023). Assessment of water resources system resilience under hazardous events using system dynamic approach and artificial neural networks. in Journal of Hydroinformatics
IWA Publishing..
https://doi.org/10.2166/hydro.2023.069

Stojković M, Marjanović D, Rakić D, Ivetić D, Simić V, Milivojević N, Trajković S. Assessment of water resources system resilience under hazardous events using system dynamic approach and artificial neural networks. in Journal of Hydroinformatics. 2023;.
doi:10.2166/hydro.2023.069 .

Stojković, Milan, Marjanović, Dušan, Rakić, Dragan, Ivetić, Damjan, Simić, Višnja, Milivojević, Nikola, Trajković, Slaviša, "Assessment of water resources system resilience under hazardous events using system dynamic approach and artificial neural networks" in Journal of Hydroinformatics (2023),
https://doi.org/10.2166/hydro.2023.069 . .

TY  - JOUR
AU  - Rakić, Dragan
AU  - Stojković, Milan
AU  - Ivetić, Damjan
AU  - Živković, Miroslav
AU  - Milivojević, Nikola
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2672
AB  - The paper presents a functionality investigation of the key dam elements based on finite element analysis. A detailed analysis of filtration processes, dam strength, and the surrounding rock mass was conducted. Dam elements whose potential damage could jeopardize the normal functioning of the embankment dam have been identified. A particular emphasis was placed on the analysis of dam elements that have been identified as weak points. A numerical analysis of the impact of individual grout curtain zone failure on leakage under the dam body, a strength analysis of the overflow section, as well as the analysis of the slope stability that can compromise the functioning of the spillway have been performed. To analyze the partial stability of individual structural elements, a new measure of local stability was introduced as the remaining load-bearing capacity. As a case study, the Zavoj dam, which is a part of the Pirot reservoir system in the Republic of Serbia, was used. Investigation revealed that local damage to the grout curtain will not significantly increase leakage under the dam body, the overflow section is one of the most robust elements of the dam, but the slope above the spillway can compromise the functioning of the overflow and thus the safety of the entire dam. Based on the analysis of the results of the remaining load-bearing capacity, the dependence of the spillway capacity on earthquake intensity has been defined. The established relationship represents a surrogate model for further assessment of dynamic resilience of the complex multipurpose reservoir system, within the scope of the advanced reservoir system management.
PB  - MDPI
T2  - Applied sciences MDPI
T1  - Failure Assessment of Embankment Dam Elements: Case Study of the Pirot Reservoir System
VL  - 12(2)
DO  - 10.3390/app12020558
ER  - 

@article{
author = "Rakić, Dragan and Stojković, Milan and Ivetić, Damjan and Živković, Miroslav and Milivojević, Nikola",
year = "2022",
abstract = "The paper presents a functionality investigation of the key dam elements based on finite element analysis. A detailed analysis of filtration processes, dam strength, and the surrounding rock mass was conducted. Dam elements whose potential damage could jeopardize the normal functioning of the embankment dam have been identified. A particular emphasis was placed on the analysis of dam elements that have been identified as weak points. A numerical analysis of the impact of individual grout curtain zone failure on leakage under the dam body, a strength analysis of the overflow section, as well as the analysis of the slope stability that can compromise the functioning of the spillway have been performed. To analyze the partial stability of individual structural elements, a new measure of local stability was introduced as the remaining load-bearing capacity. As a case study, the Zavoj dam, which is a part of the Pirot reservoir system in the Republic of Serbia, was used. Investigation revealed that local damage to the grout curtain will not significantly increase leakage under the dam body, the overflow section is one of the most robust elements of the dam, but the slope above the spillway can compromise the functioning of the overflow and thus the safety of the entire dam. Based on the analysis of the results of the remaining load-bearing capacity, the dependence of the spillway capacity on earthquake intensity has been defined. The established relationship represents a surrogate model for further assessment of dynamic resilience of the complex multipurpose reservoir system, within the scope of the advanced reservoir system management.",
publisher = "MDPI",
journal = "Applied sciences MDPI",
title = "Failure Assessment of Embankment Dam Elements: Case Study of the Pirot Reservoir System",
volume = "12(2)",
doi = "10.3390/app12020558"
}

Rakić, D., Stojković, M., Ivetić, D., Živković, M.,& Milivojević, N.. (2022). Failure Assessment of Embankment Dam Elements: Case Study of the Pirot Reservoir System. in Applied sciences MDPI
MDPI., 12(2).
https://doi.org/10.3390/app12020558

Rakić D, Stojković M, Ivetić D, Živković M, Milivojević N. Failure Assessment of Embankment Dam Elements: Case Study of the Pirot Reservoir System. in Applied sciences MDPI. 2022;12(2).
doi:10.3390/app12020558 .

Rakić, Dragan, Stojković, Milan, Ivetić, Damjan, Živković, Miroslav, Milivojević, Nikola, "Failure Assessment of Embankment Dam Elements: Case Study of the Pirot Reservoir System" in Applied sciences MDPI, 12(2) (2022),
https://doi.org/10.3390/app12020558 . .

TY  - JOUR
AU  - Popović, Zdenka
AU  - Mirković, Nikola
AU  - Brajović, Ljiljana
AU  - Rakić, Dragan
AU  - Lazarević, Luka
AU  - Petričević, Slobodan
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2571
AB  - The railway track with continuously welded rails is an essential part of
the modern railway superstructure around the world. Calculation of the temperature
stresses in continuously welded rails has great significance for the planning
of maintenance activities in order to maintain traffic safety (risk of derailment due
to either rail break, or track buckling). This paper presents the finite element model
for calculation of rail stresses and displacements due to the temperature changes,
which was developed by the authors. The monitoring of the track sections, which
are significant regarding traffic safety, was suggested in this paper.
PB  - Springer, Cham
T2  - Advances in Intelligent Systems and Computing
T1  - Temperature Stresses in CWR – Experience of Serbian Railways
VL  - 1115
DO  - 10.1007/978-3-030-37916-2_81
ER  - 

@article{
author = "Popović, Zdenka and Mirković, Nikola and Brajović, Ljiljana and Rakić, Dragan and Lazarević, Luka and Petričević, Slobodan",
year = "2020",
abstract = "The railway track with continuously welded rails is an essential part of
the modern railway superstructure around the world. Calculation of the temperature
stresses in continuously welded rails has great significance for the planning
of maintenance activities in order to maintain traffic safety (risk of derailment due
to either rail break, or track buckling). This paper presents the finite element model
for calculation of rail stresses and displacements due to the temperature changes,
which was developed by the authors. The monitoring of the track sections, which
are significant regarding traffic safety, was suggested in this paper.",
publisher = "Springer, Cham",
journal = "Advances in Intelligent Systems and Computing",
title = "Temperature Stresses in CWR – Experience of Serbian Railways",
volume = "1115",
doi = "10.1007/978-3-030-37916-2_81"
}

Popović, Z., Mirković, N., Brajović, L., Rakić, D., Lazarević, L.,& Petričević, S.. (2020). Temperature Stresses in CWR – Experience of Serbian Railways. in Advances in Intelligent Systems and Computing
Springer, Cham., 1115.
https://doi.org/10.1007/978-3-030-37916-2_81

Popović Z, Mirković N, Brajović L, Rakić D, Lazarević L, Petričević S. Temperature Stresses in CWR – Experience of Serbian Railways. in Advances in Intelligent Systems and Computing. 2020;1115.
doi:10.1007/978-3-030-37916-2_81 .

Popović, Zdenka, Mirković, Nikola, Brajović, Ljiljana, Rakić, Dragan, Lazarević, Luka, Petričević, Slobodan, "Temperature Stresses in CWR – Experience of Serbian Railways" in Advances in Intelligent Systems and Computing, 1115 (2020),
https://doi.org/10.1007/978-3-030-37916-2_81 . .

TY  - CONF
AU  - Radovanović, Slobodan
AU  - Rakić, Dragan
AU  - Milivojević, NIkola
AU  - Milivojević, Vladimir
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1128
PB  - Građevinski fakultet, Univerzitet Crne Gore, Podgorica
C3  - Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa
T1  - Identifikacija parametara modifikovanog Cam-Clay materijalnog modela primenom MKE,
EP  - 1894
SP  - 1887
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1128
ER  - 

@conference{
author = "Radovanović, Slobodan and Rakić, Dragan and Milivojević, NIkola and Milivojević, Vladimir",
year = "2014",
publisher = "Građevinski fakultet, Univerzitet Crne Gore, Podgorica",
journal = "Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa",
title = "Identifikacija parametara modifikovanog Cam-Clay materijalnog modela primenom MKE,",
pages = "1894-1887",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1128"
}

Radovanović, S., Rakić, D., Milivojević, N.,& Milivojević, V.. (2014). Identifikacija parametara modifikovanog Cam-Clay materijalnog modela primenom MKE,. in Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa
Građevinski fakultet, Univerzitet Crne Gore, Podgorica., 1887-1894.
https://hdl.handle.net/21.15107/rcub_grafar_1128

Radovanović S, Rakić D, Milivojević N, Milivojević V. Identifikacija parametara modifikovanog Cam-Clay materijalnog modela primenom MKE,. in Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa. 2014;:1887-1894.
https://hdl.handle.net/21.15107/rcub_grafar_1128 .

Radovanović, Slobodan, Rakić, Dragan, Milivojević, NIkola, Milivojević, Vladimir, "Identifikacija parametara modifikovanog Cam-Clay materijalnog modela primenom MKE," in Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa (2014):1887-1894,
https://hdl.handle.net/21.15107/rcub_grafar_1128 .

TY  - CONF
AU  - Vukićević, Mirjana
AU  - Rakić, Dragan
PY  - 2010
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/290
AB  - An implicit computational governing parameter method (GPM) for stress integration of the modified Cam-Clay model is presented in the paper. In the previous studies, the increment of the mean plastic strain d epsilon(p)(m) was adopted as the governing parameter for the modified Cam-Clay model. While in this paper, the effective mean stress sigma(m)' is used as the governing parameter, which is much more convenient than d epsilon(p)(m). Such algorithm is simple, reliable, efficient and robust. This approach makes it possible to calculate the true tangent constitutive matrix in a simple way.
C3  - Information Technology in Geo-Engineering
T1  - The Mean Stress as the Governing Parameter in the Implicit GPM Stress Integration of Modified Cam-Clay Model
EP  - 475
SP  - 467
DO  - 10.3233/978-1-60750-617-1-467
ER  - 

@conference{
author = "Vukićević, Mirjana and Rakić, Dragan",
year = "2010",
abstract = "An implicit computational governing parameter method (GPM) for stress integration of the modified Cam-Clay model is presented in the paper. In the previous studies, the increment of the mean plastic strain d epsilon(p)(m) was adopted as the governing parameter for the modified Cam-Clay model. While in this paper, the effective mean stress sigma(m)' is used as the governing parameter, which is much more convenient than d epsilon(p)(m). Such algorithm is simple, reliable, efficient and robust. This approach makes it possible to calculate the true tangent constitutive matrix in a simple way.",
journal = "Information Technology in Geo-Engineering",
title = "The Mean Stress as the Governing Parameter in the Implicit GPM Stress Integration of Modified Cam-Clay Model",
pages = "475-467",
doi = "10.3233/978-1-60750-617-1-467"
}

Vukićević, M.,& Rakić, D.. (2010). The Mean Stress as the Governing Parameter in the Implicit GPM Stress Integration of Modified Cam-Clay Model. in Information Technology in Geo-Engineering, 467-475.
https://doi.org/10.3233/978-1-60750-617-1-467

Vukićević M, Rakić D. The Mean Stress as the Governing Parameter in the Implicit GPM Stress Integration of Modified Cam-Clay Model. in Information Technology in Geo-Engineering. 2010;:467-475.
doi:10.3233/978-1-60750-617-1-467 .

Vukićević, Mirjana, Rakić, Dragan, "The Mean Stress as the Governing Parameter in the Implicit GPM Stress Integration of Modified Cam-Clay Model" in Information Technology in Geo-Engineering (2010):467-475,
https://doi.org/10.3233/978-1-60750-617-1-467 . .