A damage-coupled multi-axial time-dependent low cycle fatigue failure model for SS304 stainless steel at high temperature

作     者：Yujie LIU Qing GAO Guozheng KANG 

作者机构：School of Mechanics and Engineering Southwest Jiaotong University Chengdu 610031 China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2011年第24卷第2期

页      面：169-174页

核心收录：

学科分类：08[工学] 082503[工学-航空宇航制造工程] 0825[工学-航空宇航科学与技术] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the Fundamental Research Funds for the Central Universities (No.SWJTU09ZT35) National Science Fund for Distinguished Young Scholars of China (No.11025210) 

主　　题：SS304 stainless steel Constitutive model Low cycle fatigue Failure model Damage-coupled High temperature 

摘      要：Based on the time-dependent strain cyclic characteristics and fatigue behaviors of SS304 stainless steel under multi-axial cyclic loading at 700 ？ C, and in the frame of unified visoco-plastic cyclic constitutive model and continuum damage mechanics theory, the damage-coupled multi-axial time-dependent constitutive model and fatigue failure model were proposed. In the model, the evolution equation of damage was introduced in and the time-dependent effects, e.g. holding time, loading rate, were taken into account. The model was applied to the simulation of whole-life cyclic deformation behaviors and prediction of LCF life for SS304 stainless steel in multiaxial time-dependent low cycle fatigue tests. It is shown that the simulated results agree well with experimental ones.