Cohesive Zone Modeling for 3D Ductile Crack Propagation

摘要：

　　Computational modeling of 3D crack propagation in very ductile materials is still a challenge in fracture mechanics analysis.In the present work a new stress-triaxiality-dependent cohesive zone model (TCZM) is proposed to describe elastic-plastic fracture process in full three-dimensional specimens.The cohesive parameters are identified as a function of the stress triaxiality from ductile fracture experiments.The predictions of TCZM show good agreement with the experimental results for both side-grooved C(T) specimen and rod bar specimen.

关键词： Cohesive zone modeling stress triaxiality stress-triaxiality-dependent cohesive zone model (TCZM),3D ductile fracture simulation

作者: Xiao Li Huang Yuan

作者单位: Department of Mechanical Engineering,University of Wuppertal,Germany School of Aerospace Engineering,Tsinghua University,Beijing,China

会议类型: 国际会议

会议名称: 2016 International Symposium on Structural Integrity，ISSI—2016(2016国际结构完整性研讨会)

会议地点: 天津

会议语种:英文

页码: 132-136

在线出版日期: 2016-05-26（万方平台首次上网日期，不代表论文的发表时间）