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A New Multiaxial High-Cycle Fatigue Criterion Based on the Critical Plane for Ductile and Brittle Materials

机译:基于临界平面的韧性和脆性材料新的多轴高周疲劳准则

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摘要

An improved high-cycle multiaxial fatigue criterion based on the critical plane was proposed in this paper. The critical plane was defined as the plane of maximum shear stress (MSS) in the proposed multiaxial fatigue criterion, which is different from the traditional critical plane based on the MSS amplitude. The proposed criterion was extended as a fatigue life prediction model that can be applicable for ductile and brittle materials. The fatigue life prediction model based on the proposed high-cycle multiaxial fatigue criterion was validated with experimental results obtained from the test of 7075-T651 aluminum alloy and some references.
机译:提出了一种基于临界面的改进的高周疲劳多轴疲劳准则。在提出的多轴疲劳准则中,临界平面被定义为最大剪切应力(MSS)平面,该平面不同于基于MSS振幅的传统临界平面。提出的标准已扩展为可用于延性和脆性材料的疲劳寿命预测模型。根据7075-T651铝合金的试验结果和一些参考资料,验证了基于提出的高循环多轴疲劳准则的疲劳寿命预测模型。

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