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A simple energy‐based model for nonproportional low‐cycle multiaxial fatigue life prediction under constant‐amplitude loading.

Authors :
Lu, Y.
Wu, H.
Zhong, Z.
Source :
Fatigue & Fracture of Engineering Materials & Structures; Jun2018, Vol. 41 Issue 6, p1402-1411, 10p, 3 Diagrams, 3 Charts, 8 Graphs
Publication Year :
2018

Abstract

Abstract: From the literature concerning the traditional nonproportional (NP) multiaxial cyclic fatigue prediction, special attentions are usually paid to multiaxial constitutive relations to quantify fatigue damage accumulation. As a result, estimation of NP hardening effect decided by the entire history path is always proposed, which is a challenging and complex task. To simplify the procedure of multiaxial fatigue life prediction of engineering components, in this paper, a novel effective energy parameter based on simple material properties is proposed. The parameter combines uniaxial cyclic plastic work and NP hardening effects. The fatigue life has been assessed based on traditional multiaxial fatigue criterion and the proposed parameter, which has been validated by experimental results of 316 L stainless steel under different low‐cycle loading paths. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
8756758X
Volume :
41
Issue :
6
Database :
Complementary Index
Journal :
Fatigue & Fracture of Engineering Materials & Structures
Publication Type :
Academic Journal
Accession number :
129512247
Full Text :
https://doi.org/10.1111/ffe.12785