Multiaxial fatigue damage modelling at macro scale of Ti–6Al–4V alloy

The Lemaitre and Chaboche fatigue model is investigated in order to predict the fatigue life of tensile samples with and without notches, defining different stress concentration fields. Elastoplastic FE simulations based on anisotropic yield locus description were carried out in order to obtain the...

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Bibliographic Details
Published in:International journal of fatigue 2009-11, Vol.31 (11), p.2031-2040
Main Authors: Marmi, A.K., Habraken, A.M., Duchene, L.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Fatigue
Fatigue damage
Fatigue life
Finite element analysis
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Notch
Stress gradient
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Summary:The Lemaitre and Chaboche fatigue model is investigated in order to predict the fatigue life of tensile samples with and without notches, defining different stress concentration fields. Elastoplastic FE simulations based on anisotropic yield locus description were carried out in order to obtain the stress and strain distributions near the notch root. The Lemaitre and Chaboche fatigue model was applied using the point method (local approach) and the gradient method (non-local approach).
ISSN:0142-1123
1879-3452
DOI:10.1016/j.ijfatigue.2009.03.003