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Article dans une revue

Cyclic inelastic constitutive equations and their impact on the fatigue life predictions

Abstract : Cyclic plasticity and viscoplasticity constitutive equations are revisited in the context of fatigue life analysis of components submitted to small strain amplitudes but high strain ratio. The model used is based on a series of back stresses, each of them containing a threshold in the dynamic recovery term. Capability to correctly reproduce the cyclic softening and the limited mean stress relaxation is particularly examined, with the help of analytical solutions for uniaxial conditions. Comparisons are made with available experimental data on a Titanium alloy and a Nickel base superalloy, both in terms of the stabilized mean stresses and for the corresponding fatigue life prediction.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00714264
Contributeur : Bibliothèque Umr7633 <>
Soumis le : mardi 3 juillet 2012 - 17:38:38
Dernière modification le : jeudi 17 septembre 2020 - 12:28:30

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Jean Louis Chaboche, P. Kanoute, Farida Azzouz. Cyclic inelastic constitutive equations and their impact on the fatigue life predictions. International Journal of Plasticity, Elsevier, 2012, 35, pp.44-66. ⟨10.1016/j.ijplas.2012.01.010⟩. ⟨hal-00714264⟩

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