Abstract
AbstractThe material behaviour constitutive equations play a central role in the engineering components analysis. Mainly for non-monotonic loading paths, different phenomena appear such as ratchetting, relaxation of mean stress and cyclic hardening, …, which induces an increased complexity in predicting of the mechanical responses of the material. In this study we focus on the analyses of cyclic behaviour of Aluminum alloy 2024 considering different hardening models and identification strategies. A Chaboche’s type combined isotropic and kinematic hardening model is used considering one or two kinematic hardenings. The material parameters are determined using cyclic (one cycle) and monotonic shear tests applied on Aluminum alloy 2024 sheet specimens. Numerical parametric study is done using different variants of the identified model. This study shows the importance of the hardening behaviour as well as the identification strategy in the prediction of stress strains responses in cyclic loadings.KeywordsKinematic hardeningIsotropic hardeningLow cycleCyclic loadingAluminum 2024Tensile testShear testModellingConstitutive modelIdentificationNumerical simulationFinite elementAbaqus
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