In the present paper, the modified Carpinteri–Spagnoli (C–S) criterion is combined with the PrismaticHull (PH) method proposed by Mamiya, Araújo et al. [15] to evaluate an equivalent shear stress amplitudefor multiaxial fatigue loading. More precisely, the PH method, originally formulated for synchronousloading and successively extended to asynchronous loading, is here adopted to compute the shear stressamplitude acting on the critical plane, used in the modified C–S criterion. By comparing some experimentaldata available in the literature with the theoretical estimations, the multiaxial fatigue strength evaluationsderived through the modified C–S criterion are shown to be improved if the shear stressamplitude is determined by applying the PH method instead of the Minimum Circumscribed Circle(MCC) method, especially for particular shear stress paths as is here discussed.

On the use of the Prismatic Hull method in a critical plane-based multiaxial fatigue criterion

RONCHEI, Camilla;
2014

Abstract

In the present paper, the modified Carpinteri–Spagnoli (C–S) criterion is combined with the PrismaticHull (PH) method proposed by Mamiya, Araújo et al. [15] to evaluate an equivalent shear stress amplitudefor multiaxial fatigue loading. More precisely, the PH method, originally formulated for synchronousloading and successively extended to asynchronous loading, is here adopted to compute the shear stressamplitude acting on the critical plane, used in the modified C–S criterion. By comparing some experimentaldata available in the literature with the theoretical estimations, the multiaxial fatigue strength evaluationsderived through the modified C–S criterion are shown to be improved if the shear stressamplitude is determined by applying the PH method instead of the Minimum Circumscribed Circle(MCC) method, especially for particular shear stress paths as is here discussed.
Critical plane approach; Multiaxial high-cycle fatigue; Shear stress amplitude; Stress-base criterion
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11770/304676
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