文献类型：期刊文献

英文题名：Micromechanical Analysis on the Failure Criterion of Ductile Material

作者：Liu, M.M.[1]; Chen, J.J.[1]

机构：[1] East China University of Science and Technology, School of Mechanical and Power Engineering, 130 Meilong Rd, Shanghai, 200237, China

年份：2015

卷号：130

起止页码：1097

外文期刊名：Procedia Engineering

收录：EI(收录号：20161502237180)

语种：英文

外文关键词：Shear stress - Fracture - Finite element method - Void fraction

摘要：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. ? 2015 The Authors.