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在存在高循环疲劳(HCF)或低循环疲劳(LCF)预损伤的情况下,预测 ...
本文基于损伤力学理论,提出考虑预损伤的变幅疲劳剩余寿命预测方法。通过推导高周、低周和中周疲劳的损伤演化方程,建立与材料S-N曲线参数的显式关系,并引入应力比参数量化载荷序列效应,形成多阶段变幅疲劳寿命预测模型。实验验证表明,该模型对10 ...
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