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An updated version of the multimechanism model for cyclic plasticity

Abstract : In this paper we consider the elastoplastic behavior of the 304L stainless steel under cyclic loading at room temperature. After the experimental investigations presented in Taleb and Hauet (2009), the present work deals with modeling in the light of the new observations. An improved version of the multimechanism model is proposed in which the isotropic variable is revisited in order to take into account the non-proportional effect of the loading as well as the strain memory phenomenon. A particular attention has been paid to the identification process in order to capture the main important phenomena: relative parts of isotropic and kinematic hardening, time dependent effects, non-proportionality effect, strain amplitude dependence. Only strain controlled tests have been used for the identification process. The capabilities of the model with “only” 17 parameters are evaluated considering a number of proportional and non-proportional stress and strain controlled tests.
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Submitted on : Thursday, May 6, 2010 - 11:36:14 AM
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Lakhdar Taleb, Georges Cailletaud. An updated version of the multimechanism model for cyclic plasticity. International Journal of Plasticity, Elsevier, 2010, 26, pp.859-874. ⟨10.1016/j.ijplas.2009.11.002⟩. ⟨hal-00481232⟩



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