Numerical simulation for studying constraint effect on ductile fracture initiation using complete Gurson model
Uticaj ograničenog deformisanja na nastanak žilavog loma korišćenjem kompletnog Gursonovog modela - numerička simulacija
Апстракт
Ductile fracture initiation in high-strength low alloyed welded steel joints is predicted using micromechanical complete Gurson model (CGM). The crack tip constraint and variation of stress triaxiality in ligament are considered on single-edge notch bend SE(B) and compact tension C(T) specimens, including the effect of strength mismatching and different weld metal width. According to the analysis of stress triaxiality in front of the crack tip, transferability of fracture initiation parameter was studied. As a result of the analyses on specimens, fracture initiation parameter determined by using CGM can be transferred from one geometry to another if their triaxial conditions are found to be similar.
Nastanak žilavog loma u zavarenim spojevima niskolegiranog čelika povišene čvrstoće je predviđen primenom mikromehaničkog kompletnog Gursonovog modela (CGM). Ograničeno deformisanje oko vrha prsline (eng. 'constraint') i promena troosnosti napona u ligamentu su razmatrani na epruvetama za savijanje u tri tačke SE(B) i na kompaktnim epruvetama za zatezanje C(T), uzimajući u obzir uticaj razlike u mehaničkim osobinama (eng. 'mismatch') i širine metala šava. Analizirana je prenosivost parametra koji odgovara nastanku prsline, u zavisnosti od troosnosti napona ispred njenog vrha i zaključeno je da se dobijene vrednosti korišćenog parametra mogu koristiti za obe geometrije razmatrane u radu.
Кључне речи:
ductile fracture / transferability / constraint effect / welded specimensИзвор:
FME Transactions, 2010, 38, 4, 197-202Издавач:
- University of Belgrade - Faculty of Mechanical Engineering, Belgrade
Финансирање / пројекти:
- Специјалне теме механике лома материјала (RS-MESTD-MPN2006-2010-144027)
- Микромеханички критеријуми оштећења и лома (RS-MESTD-Basic Research (BR or ON)-174004)
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Junis, Bašir AU - Rakin, Marko AU - Međo, Bojan AU - Sedmak, Aleksandar PY - 2010 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1643 AB - Ductile fracture initiation in high-strength low alloyed welded steel joints is predicted using micromechanical complete Gurson model (CGM). The crack tip constraint and variation of stress triaxiality in ligament are considered on single-edge notch bend SE(B) and compact tension C(T) specimens, including the effect of strength mismatching and different weld metal width. According to the analysis of stress triaxiality in front of the crack tip, transferability of fracture initiation parameter was studied. As a result of the analyses on specimens, fracture initiation parameter determined by using CGM can be transferred from one geometry to another if their triaxial conditions are found to be similar. AB - Nastanak žilavog loma u zavarenim spojevima niskolegiranog čelika povišene čvrstoće je predviđen primenom mikromehaničkog kompletnog Gursonovog modela (CGM). Ograničeno deformisanje oko vrha prsline (eng. 'constraint') i promena troosnosti napona u ligamentu su razmatrani na epruvetama za savijanje u tri tačke SE(B) i na kompaktnim epruvetama za zatezanje C(T), uzimajući u obzir uticaj razlike u mehaničkim osobinama (eng. 'mismatch') i širine metala šava. Analizirana je prenosivost parametra koji odgovara nastanku prsline, u zavisnosti od troosnosti napona ispred njenog vrha i zaključeno je da se dobijene vrednosti korišćenog parametra mogu koristiti za obe geometrije razmatrane u radu. PB - University of Belgrade - Faculty of Mechanical Engineering, Belgrade T2 - FME Transactions T1 - Numerical simulation for studying constraint effect on ductile fracture initiation using complete Gurson model T1 - Uticaj ograničenog deformisanja na nastanak žilavog loma korišćenjem kompletnog Gursonovog modela - numerička simulacija EP - 202 IS - 4 SP - 197 VL - 38 UR - https://hdl.handle.net/21.15107/rcub_technorep_1643 ER -
@article{ author = "Junis, Bašir and Rakin, Marko and Međo, Bojan and Sedmak, Aleksandar", year = "2010", abstract = "Ductile fracture initiation in high-strength low alloyed welded steel joints is predicted using micromechanical complete Gurson model (CGM). The crack tip constraint and variation of stress triaxiality in ligament are considered on single-edge notch bend SE(B) and compact tension C(T) specimens, including the effect of strength mismatching and different weld metal width. According to the analysis of stress triaxiality in front of the crack tip, transferability of fracture initiation parameter was studied. As a result of the analyses on specimens, fracture initiation parameter determined by using CGM can be transferred from one geometry to another if their triaxial conditions are found to be similar., Nastanak žilavog loma u zavarenim spojevima niskolegiranog čelika povišene čvrstoće je predviđen primenom mikromehaničkog kompletnog Gursonovog modela (CGM). Ograničeno deformisanje oko vrha prsline (eng. 'constraint') i promena troosnosti napona u ligamentu su razmatrani na epruvetama za savijanje u tri tačke SE(B) i na kompaktnim epruvetama za zatezanje C(T), uzimajući u obzir uticaj razlike u mehaničkim osobinama (eng. 'mismatch') i širine metala šava. Analizirana je prenosivost parametra koji odgovara nastanku prsline, u zavisnosti od troosnosti napona ispred njenog vrha i zaključeno je da se dobijene vrednosti korišćenog parametra mogu koristiti za obe geometrije razmatrane u radu.", publisher = "University of Belgrade - Faculty of Mechanical Engineering, Belgrade", journal = "FME Transactions", title = "Numerical simulation for studying constraint effect on ductile fracture initiation using complete Gurson model, Uticaj ograničenog deformisanja na nastanak žilavog loma korišćenjem kompletnog Gursonovog modela - numerička simulacija", pages = "202-197", number = "4", volume = "38", url = "https://hdl.handle.net/21.15107/rcub_technorep_1643" }
Junis, B., Rakin, M., Međo, B.,& Sedmak, A.. (2010). Numerical simulation for studying constraint effect on ductile fracture initiation using complete Gurson model. in FME Transactions University of Belgrade - Faculty of Mechanical Engineering, Belgrade., 38(4), 197-202. https://hdl.handle.net/21.15107/rcub_technorep_1643
Junis B, Rakin M, Međo B, Sedmak A. Numerical simulation for studying constraint effect on ductile fracture initiation using complete Gurson model. in FME Transactions. 2010;38(4):197-202. https://hdl.handle.net/21.15107/rcub_technorep_1643 .
Junis, Bašir, Rakin, Marko, Međo, Bojan, Sedmak, Aleksandar, "Numerical simulation for studying constraint effect on ductile fracture initiation using complete Gurson model" in FME Transactions, 38, no. 4 (2010):197-202, https://hdl.handle.net/21.15107/rcub_technorep_1643 .