Many fatigue damage models have been investigated based on the S–N curve or modified S–N curve; however, a number of them require additional efforts to determine the material parameters or do not consider the loading history (loading interactions, loading sequences, loading levels, etc.). These limitations can result in extreme deviations for estimating the fatigue life in real-world scenarios. To address these limitations, a new fatigue damage model is developed based on the material memory, which can be described as the degradation of mechanical properties under cyclic loadings. Comparisons with three models are used to demonstrate the validity of the proposed model. Furthermore, four sets of experimental data under two-stress and four-stress levels are carried out to verify the validation of the proposed model, which improves the residual life estimation over the three existing models used for comparison.

中文翻译：

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基于材料记忆退化的新型非线性累积疲劳损伤模型

许多疲劳损伤模型已经基于 S-N 曲线或修正的 S-N 曲线进行了研究；然而，其中一些需要额外的努力来确定材料参数或不考虑加载历史（加载交互、加载顺序、加载水平等）。这些限制可能导致在实际场景中估计疲劳寿命时出现极端偏差。为了解决这些限制，基于材料记忆开发了一种新的疲劳损伤模型，可以将其描述为循环载荷下机械性能的退化。与三个模型的比较被用来证明所提出的模型的有效性。此外，还进行了四组两应力和四应力水平下的实验数据，以验证所提出模型的有效性，