Multi-mechanism models for the description of ratchetting : effect of the scale transition rule and of the coupling between hardening variables

International audienceThis paper is concerned with two multi-mechanism based models for application to ratchetting effect. The 2M1C (2 Mechanisms and 1 Criterion) model and 2M2C (2 Mechanisms and Criteria) model, proposed by the authors in a previous article, are modified to incorporate (i) a corrective term in the computation of the local stresses; (ii) Burlet–Cailletaud's fading memory term in the kinematic hardening evolution rule. Experimental data from the literature are selected to assess the models capability. Numerical results are obtained using the proposed models for a series of uni-axial and multi-axial ratchetting tests performed at different stress ranges of an austenitic stainless steel