Ratcheting Simulation of Z2CN18.10 Austenitic Stainless Steel Under Pre-Strain Conditions

摘要：

　　Uniaxial ratcheting behaviors of Z2CN18.10 austenitic stainless steel under both tensile pre-strain (TP) and compressive pre-strain (CP) were experimentally studied at room temperature.The experimental results show that: TP restrains strain accumulation of subsequent cycling with positive mean stress; lower level of CP is found to accelerate ratcheting strain while higher level of CP retards the accumulation.Based on the Ohno-Wang Ⅱ kinematic hardening rule,a rate-independent model,a viscoplastic model,an isotropic hardening model and a modified model were constructed to describe the ratcheting behaviors under various pre-strain conditions.All the four models gave fairly good prediction on ratcheting strains for various TP.The isotropic hardening model and modified model predicted acceptable ratcheting strain though still showing slight tendency of over prediction.

关键词： Pre-strain Cyclic deformation Ratcheting Constitutive Model

作者: Yong Wang Yougang Peng Xu Chen

作者单位: Metrology Testing Center,China Academy of Engineering Physics,No.64,Mianshan Road,Mianyang 621900,Ch Research Center of Laser Fusion,China Academy of Engineering Physics,No.64,Mianshan Road,Mianyang 62 School of Chemical Engineering and Technology,Tianjin University,No.92,Weijin Road,Tianjin 300072,Ch

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: 112-116

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）