A stress‐based sectional critical plane model is proposed to predict fatigue life under multiaxial constant amplitude loading. The proposed model considers the effects of material properties and loading paths including stress amplitude ratio, phase angle and mean stress. By introducing the ratio of maximum shear stress amplitude to maximum normal stress amplitude, the crack behaviour can be predicted and the critical planes can be divided into three sections: the maximum normal stress plane, maximum damage plane and maximum shear stress amplitude plane. To verify the accuracy and applicability of the proposed model, experimental data of 30CrMnSiA steel conducted by the authors and other test data of different materials from the existing literatures are utilized. The prediction results demonstrate that the proposed sectional critical plane model shows strong applicability for steel, aluminium and titanium alloy materials, especially under the multiaxial loadings with mean stresses. For steel materials, the prediction results of the proposed model are better than the commonly used criteria.

中文翻译：

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用于多轴高周疲劳寿命预测的截面临界平面模型

提出了一种基于应力的截面临界平面模型来预测多轴恒定振幅载荷下的疲劳寿命。所提出的模型考虑了材料特性和加载路径（包括应力振幅比，相角和平均应力）的影响。通过引入最大剪应力幅值与最大法向应力幅值之比，可以预测裂纹行为，并将临界面分为三个部分：最大法向应力面，最大破坏面和最大剪应力幅值面。为了验证该模型的准确性和适用性，利用了作者进行的30CrMnSiA钢的实验数据以及现有文献中不同材料的其他测试数据。预测结果表明，所提出的截面临界平面模型对钢，铝和钛合金材料具有很强的适用性，尤其是在具有平均应力的多轴载荷下。对于钢铁材料，该模型的预测结果优于常用的标准。