In the present paper, the multiaxial fatigue estimation of severely notched specimens under Low-Cycle Fatigue (LCF) is carried out by extending to notched structural components the strain-based criterionrecently proposed by Carpinteri et al. for plain specimens. Such an extension is formulated by implementingthe concept of the control volume related to the Strain Energy Density (SED) criterion proposed by Lazzarinet al. More precisely, the material point where the fatigue strength assessment is performed is assumed to belocated at a distance which is a function of the control volume radius provided by the SED criterion. Somemultiaxial LCF data, recently published in the literature for V-notched round bars made of Ti-6Al-4V titaniumalloy, are analysed through the present criterion.

A strain-based criterion for multiaxial Low-Cycle Fatigue assessment of notched structural components

Camilla Ronchei;
2018

Abstract

In the present paper, the multiaxial fatigue estimation of severely notched specimens under Low-Cycle Fatigue (LCF) is carried out by extending to notched structural components the strain-based criterionrecently proposed by Carpinteri et al. for plain specimens. Such an extension is formulated by implementingthe concept of the control volume related to the Strain Energy Density (SED) criterion proposed by Lazzarinet al. More precisely, the material point where the fatigue strength assessment is performed is assumed to belocated at a distance which is a function of the control volume radius provided by the SED criterion. Somemultiaxial LCF data, recently published in the literature for V-notched round bars made of Ti-6Al-4V titaniumalloy, are analysed through the present criterion.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11770/304691
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