Study on 3D Edge Crack Extension Simulation in Cold Rolling with the Cohesive Zone Model

摘要：

　　In the cold rolling process,the edge crack extension can cause the strip rupture completely due to the micro manufacturing defects in the edge.It can greatly impact on the production efficiency and cause the huge economic loss.Thus predicting the edge crack extension behavior becomes important to cold rolling industry.In this paper,a 3D extended finite element method (XFEM) based on the cohesive zone model (CZM) was used to study the edge crack extension under the non-reversing two-high mill cold rolling experiment condition.A bi-linear traction-separation law was utilized which is primarily given by the CZM parameters including the cohesive stress,T0 and the cohesive energy,Γ0.The cohesive stress was determined by hybrid technique of the thin-plate tension test and FEM simulation.The cohesive energy was obtained by the In-Situ SEM three points bending experiment.Different reductions were the mainly analysis factor which can study the extent of the edge crack extension by presetting the edge notch.By comparing the experimental and simulation results,they agreed well with each other.It illustrated that the CZM can provide accurate predictions for the edge crack extension in the cold rolling process.Parametric analysis was carried out and showed that the extent of the crack extension increases with the increasing of the reduction ratio.

关键词： Crack Extension Simulation Cohesive Zone Model Extended Finite Element Method Cold Rolling

作者: Daqian Zan Quan Sun Hongliang Pan Jianjun Chen Zhendong Wang

作者单位: School of Mechanical and Power Engineering,130 Meilong Road,Shanghai 200237,China School of Mechanical and Power Engineering,130 Meilong Road,Shanghai 200237,Australia

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: 101-105

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）