A FATIGUE DAMAGE RULE OF A STEEL BASED ON PLASTIC STRAIN

摘要

A fatigue damage rule was proposed based on plastic strain. Plastic strain was measured and controlled during various types of fatigue tests. Plastic strain in a half cycle showed dependence on that in the foregoing half cycle. The model was optimized with experimental results showing better life estimation than other damage rules. Coaxing effect was not observed under strain controlled condition.