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A convex hull‐based approach for multiaxial high‐cycle fatigue criteria
Fatigue & Fracture of Engineering Materials & Structures ( IF 3.7 ) Pub Date : 2020-08-09 , DOI: 10.1111/ffe.13318
Giulia Scalet 1
Affiliation  

Design methods against multiaxial high‐cycle fatigue require the formulation of appropriate criteria that differ in the definition of critical measures introduced to quantify damage, as the amplitude of shear stress. The present paper proposes a novel approach to compute the amplitude of shear stress in multiaxial high‐cycle fatigue. The approach is based on the computation of the convex hull enclosing the stress history under investigation and is validated on proportional and non‐proportional paths in several dimensions and for different materials. High accuracy is achieved when compared with alternative methods from the literature.

中文翻译:

基于凸壳的多轴高周疲劳准则方法

应对多轴高周疲劳的设计方法需要制定适当的标准,该标准在为量化损伤而引入的关键措施(剪切应力的幅度)的定义上有所不同。本文提出了一种新颖的方法来计算多轴高周疲劳中的剪应力振幅。该方法基于包含被调查应力历史的凸包的计算,并且已在不同尺寸和不同材料的比例和非比例路径上得到了验证。与文献中的替代方法相比,可以获得很高的精度。
更新日期:2020-08-09
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