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

金属学报(英文版), 2011, 24(2): 169-174.

^1, , ^2, , ^3,

1.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

2.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

3.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

基金项目: the Fundamental Research Funds for the Central Universities(SWJTU09ZT35) National Science Fund for Distinguished Young Scholars of China(11025210)

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

Yujie LIU ^1, , Qing GAO ^2, , Guozheng KANG ^3,

1.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

2.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

3.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

Keywords： SS304 stainless steel

Based on the time-dependent strain cyclic characteristics and fatigue behaviors of SS304 stainless steel under multi-axial cyclic loading at 700℃, and in the frameof 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.

参考文献

[1]	X.J. Yang;C.L. Chow;K.J. Lau .Time-dependent cyclic deformation and failure of 63Sn/37Pb solder alloy[J].International Journal of Fatigue,2003(6):533-546.

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

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