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.
A convex hull-based approach for multiaxial high-cycle fatigue criteria
Scalet G.
2021-01-01
Abstract
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.File in questo prodotto:
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