Numerical simulation of crack growth in welded joints in the presence of multiple defects
Апстракт
Simulation of crack initiation and propagation which occurred during the tensile
testing of real welded joint specimens made of low-alloyed low-carbon structural
steels is presented in this paper. Welded joints in questions were made with a
number of different defect combinations [1-3], such as excess weld metal, undercuts,
vertical misalignment and incomplete root penetration. Tensile tests were performed
on specimens divided into four groups according to their defect combinations, along
with numerical simulations using finite element method [4-6]. Once numerical models
which were valid in terms of stress and strain distribution were obtained, cracks were
introduced in the most critical locations, which corresponded to the real specimen
locations were failure of specimens initiated. The goal was to observe the behaviour
of models in the presence of these cracks, since in the case of experimental
specimens, fracture behaviour was often unconventional, due to complex geometry...
which caused them to deform in unexpected manner. This geometry was influenced
by the presence of multiple different defects in the welded joint, and in some cases
even resulted in stress states that were not uniaxial, as is usually the case with
experiments and simulations like the one presented here
Кључне речи:
Welded joint defects / finite element method / crack growth / low-carbon low-alloyed steelИзвор:
The 27th International Conference on Fracture and Structural Integrity, 2023, 178-Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200105 (Универзитет у Београду, Машински факултет) (RS-MESTD-inst-2020-200105)
Институција/група
Mašinski fakultetTY - CONF AU - Sedmak, Simon AU - Aranđelović, Mihajlo AU - Sedmak, Aleksandar AU - Petrović, Ana AU - Đorđević, Branislav PY - 2023 UR - https://machinery.mas.bg.ac.rs/handle/123456789/6027 AB - Simulation of crack initiation and propagation which occurred during the tensile testing of real welded joint specimens made of low-alloyed low-carbon structural steels is presented in this paper. Welded joints in questions were made with a number of different defect combinations [1-3], such as excess weld metal, undercuts, vertical misalignment and incomplete root penetration. Tensile tests were performed on specimens divided into four groups according to their defect combinations, along with numerical simulations using finite element method [4-6]. Once numerical models which were valid in terms of stress and strain distribution were obtained, cracks were introduced in the most critical locations, which corresponded to the real specimen locations were failure of specimens initiated. The goal was to observe the behaviour of models in the presence of these cracks, since in the case of experimental specimens, fracture behaviour was often unconventional, due to complex geometry which caused them to deform in unexpected manner. This geometry was influenced by the presence of multiple different defects in the welded joint, and in some cases even resulted in stress states that were not uniaxial, as is usually the case with experiments and simulations like the one presented here C3 - The 27th International Conference on Fracture and Structural Integrity T1 - Numerical simulation of crack growth in welded joints in the presence of multiple defects SP - 178 UR - https://hdl.handle.net/21.15107/rcub_machinery_6027 ER -
@conference{ author = "Sedmak, Simon and Aranđelović, Mihajlo and Sedmak, Aleksandar and Petrović, Ana and Đorđević, Branislav", year = "2023", abstract = "Simulation of crack initiation and propagation which occurred during the tensile testing of real welded joint specimens made of low-alloyed low-carbon structural steels is presented in this paper. Welded joints in questions were made with a number of different defect combinations [1-3], such as excess weld metal, undercuts, vertical misalignment and incomplete root penetration. Tensile tests were performed on specimens divided into four groups according to their defect combinations, along with numerical simulations using finite element method [4-6]. Once numerical models which were valid in terms of stress and strain distribution were obtained, cracks were introduced in the most critical locations, which corresponded to the real specimen locations were failure of specimens initiated. The goal was to observe the behaviour of models in the presence of these cracks, since in the case of experimental specimens, fracture behaviour was often unconventional, due to complex geometry which caused them to deform in unexpected manner. This geometry was influenced by the presence of multiple different defects in the welded joint, and in some cases even resulted in stress states that were not uniaxial, as is usually the case with experiments and simulations like the one presented here", journal = "The 27th International Conference on Fracture and Structural Integrity", title = "Numerical simulation of crack growth in welded joints in the presence of multiple defects", pages = "178", url = "https://hdl.handle.net/21.15107/rcub_machinery_6027" }
Sedmak, S., Aranđelović, M., Sedmak, A., Petrović, A.,& Đorđević, B.. (2023). Numerical simulation of crack growth in welded joints in the presence of multiple defects. in The 27th International Conference on Fracture and Structural Integrity, 178. https://hdl.handle.net/21.15107/rcub_machinery_6027
Sedmak S, Aranđelović M, Sedmak A, Petrović A, Đorđević B. Numerical simulation of crack growth in welded joints in the presence of multiple defects. in The 27th International Conference on Fracture and Structural Integrity. 2023;:178. https://hdl.handle.net/21.15107/rcub_machinery_6027 .
Sedmak, Simon, Aranđelović, Mihajlo, Sedmak, Aleksandar, Petrović, Ana, Đorđević, Branislav, "Numerical simulation of crack growth in welded joints in the presence of multiple defects" in The 27th International Conference on Fracture and Structural Integrity (2023):178, https://hdl.handle.net/21.15107/rcub_machinery_6027 .