Micromechanical Analysis on the Failure Criterion of Ductile Material. (2015)

• Record Type: Journal Article
• Authors: Liu, M.M.; Chen, J.J.
• Is Part Of: Procedia engineering. Volume 130(2015)
• Page Start: 1097
• Page End: 1104
• Publication Date: 2015
• Subjects: Critical equivalent plastic strain -- micromechanical analysis -- Finite element simulation; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2015.12.272
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: Based on finite element simulation, the void growth behavior in a 3D cell model subjected to low stress triaxiality was studied. The distribution rule of stress-strain near the void was investigated, as well as the developing trend of volume of void. The analysis results indicated that it is not appropriate to regard void volume fraction as a damage parameter under the low stress triaxiality condition. Further research was carried out to verify the reliability of the fracture strain as element failure criterion by comparing the uniaxial tension simulation and experiment results. More studies were conducted to analyze the void growth under low stress triaxiality by introducing the critical equivalent plastic strain as the material failure parameter.