Abstract This study investigated the application of the life-dependent material parameter concept to stress-based fatigue criteria for fatigue life prediction under multiaxial variable-amplitude loading. Different multiaxial fatigue criteria were applied to the fatigue life calculation with fixed and life-dependent material parameters under constant- and variable amplitude loading. Uniaxial variable-amplitude loading was applied to select the appropriate damage accumulation rule. The verification was based on experimental tests with 133 specimens made of S355 steel. Significant improvements in the fatigue life prediction under both constant- and variable-amplitude loading were observed with the applied concept.

中文翻译：

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寿命相关材料参数在多轴恒幅和变幅载荷下寿命计算中的应用

摘要 本研究调查了与寿命相关的材料参数概念在基于应力的疲劳准则中的应用，以预测多轴变幅载荷下的疲劳寿命。不同的多轴疲劳标准被应用于在恒定和可变振幅载荷下具有固定和与寿命相关的材料参数的疲劳寿命计算。应用单轴变幅加载来选择合适的损伤累积规则。验证基于对 133 个由 S355 钢制成的试样进行的实验测试。观察到应用概念在恒定和可变幅度载荷下疲劳寿命预测的显着改进。