Time dependent ratcheting-fatigue interactions of tempered 42CrMo steel:Experiments and constitutive model

摘要：

　　The time dependent ratcheting behavior and fatigue failure, as well as their interaction were investigated by uniaxial cyclic stressing tests for tempered 42CrMo steel at room temperature. The effects of stress rates and peak stress hold on the ratcheting strain and final failure life were discussed. Then based on the experimental observations, a damage-coupled constitutive model was developed to simulate the whole-life ratcheting by employing a static recovery term in the nonlinear kinematic hardening rule. Comparing with the corresponding experimental results, it is shown that the developed model can describe the whole-life ratcheting behavior of the tempered 42CrMo steel reasonably.

关键词： Ratcheting Low-cycle fatigue Visco-plastic constitutive model Damage Tempered 42CrMo steel

作者: Juan Zhang Haibo Luo Guozheng Kang Qianhua Kan

作者单位: School of Mechanics and Engineering,Southwest Jiaotong University,Chengdu 610031,PR China

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-8

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）