TY  - JOUR
AU  - Toumi, Noureddine
AU  - Maneski, Taško
AU  - Aburuga, Tarek
AU  - Nestorović, Biserka
AU  - Kozak, Dražan
AU  - Beno, Pavel
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2524
AB  - The linear buckling phenomenon is obviously very important for stability of compressed supports. The determination of buckling resistance is an important characteristic of the design of steel structure. Besides, the presence of stiffeners in structural plate elements has a vital role in order to increase critical buckling load capacity. However, these stiffeners cause a redistribution in buckling behaviour in terms of local and global buckling. In this paper the transverse and longitudinal stiffeners were employed on a real beam-column structure to maximize the critical buckling loads. The objective is to find the optimum geometry of stiffeners. Based on the finite element method, a numerical model is made using the Abaqus program in order to observe the critical buckling capacity. The results showed that the local critical buckling has been significantly affected by stiffener's position in the case of transverse stiffeners, but little effect is observed on the critical local and global buckling in the case of longitudinal stiffeners.
PB  - Univ Osijek, Tech Fac, Slavonski Brod
T2  - Tehnički vjesnik
T1  - Numerical analysis of local and global buckling of a stiffened beam-column
EP  - 1226
IS  - 4
SP  - 1221
VL  - 24
DO  - 10.17559/TV-20160118081434
ER  - 

@article{
author = "Toumi, Noureddine and Maneski, Taško and Aburuga, Tarek and Nestorović, Biserka and Kozak, Dražan and Beno, Pavel",
year = "2017",
abstract = "The linear buckling phenomenon is obviously very important for stability of compressed supports. The determination of buckling resistance is an important characteristic of the design of steel structure. Besides, the presence of stiffeners in structural plate elements has a vital role in order to increase critical buckling load capacity. However, these stiffeners cause a redistribution in buckling behaviour in terms of local and global buckling. In this paper the transverse and longitudinal stiffeners were employed on a real beam-column structure to maximize the critical buckling loads. The objective is to find the optimum geometry of stiffeners. Based on the finite element method, a numerical model is made using the Abaqus program in order to observe the critical buckling capacity. The results showed that the local critical buckling has been significantly affected by stiffener's position in the case of transverse stiffeners, but little effect is observed on the critical local and global buckling in the case of longitudinal stiffeners.",
publisher = "Univ Osijek, Tech Fac, Slavonski Brod",
journal = "Tehnički vjesnik",
title = "Numerical analysis of local and global buckling of a stiffened beam-column",
pages = "1226-1221",
number = "4",
volume = "24",
doi = "10.17559/TV-20160118081434"
}

Toumi, N., Maneski, T., Aburuga, T., Nestorović, B., Kozak, D.,& Beno, P.. (2017). Numerical analysis of local and global buckling of a stiffened beam-column. in Tehnički vjesnik
Univ Osijek, Tech Fac, Slavonski Brod., 24(4), 1221-1226.
https://doi.org/10.17559/TV-20160118081434

Toumi N, Maneski T, Aburuga T, Nestorović B, Kozak D, Beno P. Numerical analysis of local and global buckling of a stiffened beam-column. in Tehnički vjesnik. 2017;24(4):1221-1226.
doi:10.17559/TV-20160118081434 .

Toumi, Noureddine, Maneski, Taško, Aburuga, Tarek, Nestorović, Biserka, Kozak, Dražan, Beno, Pavel, "Numerical analysis of local and global buckling of a stiffened beam-column" in Tehnički vjesnik, 24, no. 4 (2017):1221-1226,
https://doi.org/10.17559/TV-20160118081434 . .

TY  - JOUR
AU  - Aburuga, Tarek
AU  - Sedmak, Aleksandar
AU  - Radaković, Zoran
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1997
AB  - The effect of the residual stresses and strains is one of the most important parameter in the structure integrity assessment. A finite element model is constructed in order to simulate the multi passes mismatched submerged arc welding SAW which used in the welded tensile test specimen. Sequentially coupled thermal mechanical analysis is done by using ABAQUS software for calculating the residual stresses and distortion due to welding. In this work, three main issues were studied in order to reduce the time consuming during welding simulation which is the major problem in the computational welding mechanics (CWM). The first issue is dimensionality of the problem. Both two- and three-dimensional models are constructed for the same analysis type, shell element for two dimension simulation shows good performance comparing with brick element. The conventional method to calculate residual stress is by using implicit scheme that because of the welding and cooling time is relatively high. In this work, the author shows that it could use the explicit scheme with the mass scaling technique, and time consuming during the analysis will be reduced very efficiently. By using this new technique, it will be possible to simulate relatively large three dimensional structures.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Numerical aspects for efficient welding computational mechanics
EP  - S148
SP  - S139
VL  - 18
DO  - 10.2298/TSCI130227180A
ER  - 

@article{
author = "Aburuga, Tarek and Sedmak, Aleksandar and Radaković, Zoran",
year = "2014",
abstract = "The effect of the residual stresses and strains is one of the most important parameter in the structure integrity assessment. A finite element model is constructed in order to simulate the multi passes mismatched submerged arc welding SAW which used in the welded tensile test specimen. Sequentially coupled thermal mechanical analysis is done by using ABAQUS software for calculating the residual stresses and distortion due to welding. In this work, three main issues were studied in order to reduce the time consuming during welding simulation which is the major problem in the computational welding mechanics (CWM). The first issue is dimensionality of the problem. Both two- and three-dimensional models are constructed for the same analysis type, shell element for two dimension simulation shows good performance comparing with brick element. The conventional method to calculate residual stress is by using implicit scheme that because of the welding and cooling time is relatively high. In this work, the author shows that it could use the explicit scheme with the mass scaling technique, and time consuming during the analysis will be reduced very efficiently. By using this new technique, it will be possible to simulate relatively large three dimensional structures.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Numerical aspects for efficient welding computational mechanics",
pages = "S148-S139",
volume = "18",
doi = "10.2298/TSCI130227180A"
}

Aburuga, T., Sedmak, A.,& Radaković, Z.. (2014). Numerical aspects for efficient welding computational mechanics. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 18, S139-S148.
https://doi.org/10.2298/TSCI130227180A

Aburuga T, Sedmak A, Radaković Z. Numerical aspects for efficient welding computational mechanics. in Thermal Science. 2014;18:S139-S148.
doi:10.2298/TSCI130227180A .

Aburuga, Tarek, Sedmak, Aleksandar, Radaković, Zoran, "Numerical aspects for efficient welding computational mechanics" in Thermal Science, 18 (2014):S139-S148,
https://doi.org/10.2298/TSCI130227180A . .

TY  - JOUR
AU  - Milošević, Miloš
AU  - Mitrović, Nenad
AU  - Jovičić, Radomir
AU  - Sedmak, Aleksandar
AU  - Maneski, Taško
AU  - Petrović, Aleksandar
AU  - Aburuga, Tarek
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1523
AB  - M. Milosevic(a), N. Mitrovic(b), R. Jovicic(a), A. Sedmak(b), T. Maneski(b), A. Petrovic(b), and T. Aburuga(b) ((a)Innovation Center of Faculty of Mechanical Engineering, b Faculty of Mechanical Engineering, University of Belgrade): Measurement of Local Tensile Properties of Welded Joint Using Digital Image Correlation Method Welded joints are heterogeneous structures consisted of several zones with different mechanical properties. During the loading, these zones are showing non-uniform mechanical behavior. In the heat affected zones is particularly complicated to monitor mechanical properties due to small dimensions, therefore HAZ mechanical properties were most often estimated through hardness testing, microstructure etc. The aim of the experiment is to assess the possibility of using Digital Image Correlation method in determining local tensile properties of HAZ. Testing was performed using 3D optical measuring system. Plates made of S235 were butt welded using MAG welding process for specimen preparation. Tensile testing of specimen characterized heterogeneous strain field and variable strain values in the monitored HAZ, indicating that DIC method is promising tool for precise local strain analysis of small dimension fields.
T2  - Chemicke Listy
T1  - Measurement of local tensile properties of welded joint using digital image correlation method
EP  - s488
IS  - SUPPL. 3
SP  - s485
VL  - 106
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1523
ER  - 

@article{
author = "Milošević, Miloš and Mitrović, Nenad and Jovičić, Radomir and Sedmak, Aleksandar and Maneski, Taško and Petrović, Aleksandar and Aburuga, Tarek",
year = "2012",
abstract = "M. Milosevic(a), N. Mitrovic(b), R. Jovicic(a), A. Sedmak(b), T. Maneski(b), A. Petrovic(b), and T. Aburuga(b) ((a)Innovation Center of Faculty of Mechanical Engineering, b Faculty of Mechanical Engineering, University of Belgrade): Measurement of Local Tensile Properties of Welded Joint Using Digital Image Correlation Method Welded joints are heterogeneous structures consisted of several zones with different mechanical properties. During the loading, these zones are showing non-uniform mechanical behavior. In the heat affected zones is particularly complicated to monitor mechanical properties due to small dimensions, therefore HAZ mechanical properties were most often estimated through hardness testing, microstructure etc. The aim of the experiment is to assess the possibility of using Digital Image Correlation method in determining local tensile properties of HAZ. Testing was performed using 3D optical measuring system. Plates made of S235 were butt welded using MAG welding process for specimen preparation. Tensile testing of specimen characterized heterogeneous strain field and variable strain values in the monitored HAZ, indicating that DIC method is promising tool for precise local strain analysis of small dimension fields.",
journal = "Chemicke Listy",
title = "Measurement of local tensile properties of welded joint using digital image correlation method",
pages = "s488-s485",
number = "SUPPL. 3",
volume = "106",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1523"
}

Milošević, M., Mitrović, N., Jovičić, R., Sedmak, A., Maneski, T., Petrović, A.,& Aburuga, T.. (2012). Measurement of local tensile properties of welded joint using digital image correlation method. in Chemicke Listy, 106(SUPPL. 3), s485-s488.
https://hdl.handle.net/21.15107/rcub_machinery_1523

Milošević M, Mitrović N, Jovičić R, Sedmak A, Maneski T, Petrović A, Aburuga T. Measurement of local tensile properties of welded joint using digital image correlation method. in Chemicke Listy. 2012;106(SUPPL. 3):s485-s488.
https://hdl.handle.net/21.15107/rcub_machinery_1523 .

Milošević, Miloš, Mitrović, Nenad, Jovičić, Radomir, Sedmak, Aleksandar, Maneski, Taško, Petrović, Aleksandar, Aburuga, Tarek, "Measurement of local tensile properties of welded joint using digital image correlation method" in Chemicke Listy, 106, no. SUPPL. 3 (2012):s485-s488,
https://hdl.handle.net/21.15107/rcub_machinery_1523 .