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

作者：Liu Yujie^*; Gao Qing; Kang Guozheng

来源：Acta Metallurgica Sinica (English Letters), 2011, 24(2): 169-174.

• SS304 stainless steel
• Constitutive model
• Low cycle fatigue
• Failure model
• Damage-coupled
• High temperature

Based on the time-dependent strain cyclic characteristics and fatigue behaviors of SS304 stainless steel under multi-axial cyclic loading at 700 degrees 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 rnodel, the evolution equation of damage was introduced in and the time-dependent effects, e.g. holding tirne, 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.

• 出版日期2011-4
• 单位西南交通大学