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

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11571/1360654
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