Micromechanical assessment of mismatch effects on fracture of high-strength low alloyed steel welded joints
Abstract
Fracture of steel welded joints produced with one or two weld metals is analysed; the latter (double mismatched) consist of overmatched and undermatched portion. Specimens with a pre-crack in the symmetry plane of each joint are examined. In double mismatched joints, the pre-crack front passes through both weld metals. Micromechanical approach (complete Gurson model) is used for ductile damage development modelling. Influence of joint width, crack length, as well as size and formulation of finite elements, is examined. The constraint effect caused by the different joint geometry is predicted and the effect of material inhomogeneity along the crack front of the double mismatched joint is assessed by transferring the parameters from the joints with one weld metal.
Keywords:
Welded joints / Micromechanics / Strength mismatch / Constraint effectsSource:
Engineering Fracture Mechanics, 2013, 109, 221-235Publisher:
- Pergamon-Elsevier Science Ltd, Oxford
Funding / projects:
- Micromechanical criteria of damage and fracture (RS-174004)
DOI: 10.1016/j.engfracmech.2013.06.010
ISSN: 0013-7944
WoS: 000325038000017
Scopus: 2-s2.0-84883456807
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Rakin, Marko AU - Međo, Bojan AU - Gubeljak, Nenad AU - Sedmak, Aleksandar PY - 2013 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2462 AB - Fracture of steel welded joints produced with one or two weld metals is analysed; the latter (double mismatched) consist of overmatched and undermatched portion. Specimens with a pre-crack in the symmetry plane of each joint are examined. In double mismatched joints, the pre-crack front passes through both weld metals. Micromechanical approach (complete Gurson model) is used for ductile damage development modelling. Influence of joint width, crack length, as well as size and formulation of finite elements, is examined. The constraint effect caused by the different joint geometry is predicted and the effect of material inhomogeneity along the crack front of the double mismatched joint is assessed by transferring the parameters from the joints with one weld metal. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Engineering Fracture Mechanics T1 - Micromechanical assessment of mismatch effects on fracture of high-strength low alloyed steel welded joints EP - 235 SP - 221 VL - 109 DO - 10.1016/j.engfracmech.2013.06.010 ER -
@article{ author = "Rakin, Marko and Međo, Bojan and Gubeljak, Nenad and Sedmak, Aleksandar", year = "2013", abstract = "Fracture of steel welded joints produced with one or two weld metals is analysed; the latter (double mismatched) consist of overmatched and undermatched portion. Specimens with a pre-crack in the symmetry plane of each joint are examined. In double mismatched joints, the pre-crack front passes through both weld metals. Micromechanical approach (complete Gurson model) is used for ductile damage development modelling. Influence of joint width, crack length, as well as size and formulation of finite elements, is examined. The constraint effect caused by the different joint geometry is predicted and the effect of material inhomogeneity along the crack front of the double mismatched joint is assessed by transferring the parameters from the joints with one weld metal.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Engineering Fracture Mechanics", title = "Micromechanical assessment of mismatch effects on fracture of high-strength low alloyed steel welded joints", pages = "235-221", volume = "109", doi = "10.1016/j.engfracmech.2013.06.010" }
Rakin, M., Međo, B., Gubeljak, N.,& Sedmak, A.. (2013). Micromechanical assessment of mismatch effects on fracture of high-strength low alloyed steel welded joints. in Engineering Fracture Mechanics Pergamon-Elsevier Science Ltd, Oxford., 109, 221-235. https://doi.org/10.1016/j.engfracmech.2013.06.010
Rakin M, Međo B, Gubeljak N, Sedmak A. Micromechanical assessment of mismatch effects on fracture of high-strength low alloyed steel welded joints. in Engineering Fracture Mechanics. 2013;109:221-235. doi:10.1016/j.engfracmech.2013.06.010 .
Rakin, Marko, Međo, Bojan, Gubeljak, Nenad, Sedmak, Aleksandar, "Micromechanical assessment of mismatch effects on fracture of high-strength low alloyed steel welded joints" in Engineering Fracture Mechanics, 109 (2013):221-235, https://doi.org/10.1016/j.engfracmech.2013.06.010 . .