Novel procedure to determine actual stress-strain curves
Апстракт
This paper presents a novel procedure for determining the actual stress- strain curves for undermatching rectangular welded joints made of martensitic armoured steel Armox 500T. The method is based on an analytical expression for true stress; digital image correlation (DIC) with two cameras, i.e. recording 3D deformations of samples; and finite element method (FEM) for stress state analysis of samples. Stresses obtained by dividing the force by the current cross-sectional area of the sample do not represent the actual stress occurring in the sample, because they do not take into account the stress concentration. In this paper we have analysed the stress concentration obtained numerically using Abaqus software in which the model's entered strain values are measured by DIC method.
Кључне речи:
undermatched weld / stress-strain diagram / finite element method (FEM) / digital image correlation (DIC)Извор:
Structural Integrity and Life, 2021, 21, 1, 37-40Издавач:
- Institut za ispitivanje materijala, Beograd
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
Inovacioni centarTY - JOUR AU - Milošević, Nenad AU - Sedmak, Aleksandar AU - Martić, Igor AU - Prokić-Cvetković, Radica PY - 2021 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3639 AB - This paper presents a novel procedure for determining the actual stress- strain curves for undermatching rectangular welded joints made of martensitic armoured steel Armox 500T. The method is based on an analytical expression for true stress; digital image correlation (DIC) with two cameras, i.e. recording 3D deformations of samples; and finite element method (FEM) for stress state analysis of samples. Stresses obtained by dividing the force by the current cross-sectional area of the sample do not represent the actual stress occurring in the sample, because they do not take into account the stress concentration. In this paper we have analysed the stress concentration obtained numerically using Abaqus software in which the model's entered strain values are measured by DIC method. PB - Institut za ispitivanje materijala, Beograd T2 - Structural Integrity and Life T1 - Novel procedure to determine actual stress-strain curves EP - 40 IS - 1 SP - 37 VL - 21 UR - https://hdl.handle.net/21.15107/rcub_machinery_3639 ER -
@article{ author = "Milošević, Nenad and Sedmak, Aleksandar and Martić, Igor and Prokić-Cvetković, Radica", year = "2021", abstract = "This paper presents a novel procedure for determining the actual stress- strain curves for undermatching rectangular welded joints made of martensitic armoured steel Armox 500T. The method is based on an analytical expression for true stress; digital image correlation (DIC) with two cameras, i.e. recording 3D deformations of samples; and finite element method (FEM) for stress state analysis of samples. Stresses obtained by dividing the force by the current cross-sectional area of the sample do not represent the actual stress occurring in the sample, because they do not take into account the stress concentration. In this paper we have analysed the stress concentration obtained numerically using Abaqus software in which the model's entered strain values are measured by DIC method.", publisher = "Institut za ispitivanje materijala, Beograd", journal = "Structural Integrity and Life", title = "Novel procedure to determine actual stress-strain curves", pages = "40-37", number = "1", volume = "21", url = "https://hdl.handle.net/21.15107/rcub_machinery_3639" }
Milošević, N., Sedmak, A., Martić, I.,& Prokić-Cvetković, R.. (2021). Novel procedure to determine actual stress-strain curves. in Structural Integrity and Life Institut za ispitivanje materijala, Beograd., 21(1), 37-40. https://hdl.handle.net/21.15107/rcub_machinery_3639
Milošević N, Sedmak A, Martić I, Prokić-Cvetković R. Novel procedure to determine actual stress-strain curves. in Structural Integrity and Life. 2021;21(1):37-40. https://hdl.handle.net/21.15107/rcub_machinery_3639 .
Milošević, Nenad, Sedmak, Aleksandar, Martić, Igor, Prokić-Cvetković, Radica, "Novel procedure to determine actual stress-strain curves" in Structural Integrity and Life, 21, no. 1 (2021):37-40, https://hdl.handle.net/21.15107/rcub_machinery_3639 .