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讨论了一种用于随机载荷下零构件疲劳寿命预估的有效计算方法 .引入材料所吸收的弹性应变能和塑性应变能等参量 ,在等能量损伤法则下推算出稳态条件下随机载荷的等价常幅应力 ,并利用 MTS810疲劳试验机对 Q2 35钢缺口试件进行了试验验证 ,对于结构设计阶段和改进阶段或应力响应时间历程无法实测的情况 ,此法尤为可行
An effective method for estimating the fatigue life of a component under random loading is discussed. The elastic strain energy and plastic strain energy absorbed by the material are introduced into the calculation. Under the equal energy damage law, the stochastic load Equivalent normal stress, and the use of MTS810 fatigue test machine Q235 steel notch specimens were tested for the structural design phase and the improvement stage or stress response time history can not be measured, this method is particularly feasible