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<p>In order to consider the influences of multiple factors such as non-proportional loading, mean stress and phase difference to multiaxial fatigue, the correlation between fatigue life and damage parameters is researched. By introducing the parameters of shear stress amplitude, normal stress amplitude, mean shear stress, mean normal stress on the maximum shear stress amplitude plane, a model for multiaxial high-cycle fatigue life evaluation is put forward based on the critical plane method. The evaluation ability of the present model is verified by the experimental data of 30CrMnSiA steel, 7075-T651 aluminum alloy and Ti-Al alloy. Furthermore, compared with McDiarmid, Zhang model, Liu model and Papadopoulos model, the results indicate that the present model yields the higher evaluation accuracy. The results will provide an approach for multiaxial fatigue life evaluation.</p>

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A Multiaxial High-Cycle Fatigue Life Evaluation Model Based on the Critical Plane Method

  • 期刊论文

  • 发表日期：

    2025年4月21日

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  • Xiao-Yong Liu,
  • Jiamiao Xie,
  • Wenqian Hao

摘要

In order to consider the influences of multiple factors such as non-proportional loading, mean stress and phase difference to multiaxial fatigue, the correlation between fatigue life and damage parameters is researched. By introducing the parameters of shear stress amplitude, normal stress amplitude, mean shear stress, mean normal stress on the maximum shear stress amplitude plane, a model for multiaxial high-cycle fatigue life evaluation is put forward based on the critical plane method. The evaluation ability of the present model is verified by the experimental data of 30CrMnSiA steel, 7075-T651 aluminum alloy and Ti-Al alloy. Furthermore, compared with McDiarmid, Zhang model, Liu model and Papadopoulos model, the results indicate that the present model yields the higher evaluation accuracy. The results will provide an approach for multiaxial fatigue life evaluation.