Modélisation expérimentale et numérique de la mise en forme des tôles minces à hautes températures avec remaillage adaptatif

Abstract : Coupled constitutive equations, formulated in the framework of the thermodynamics of irreversible processes accounting for isotropic hardening as well as the isotropic ductile damage are used to simulate numerically, by the Finite Element Analysis, 3D hydroforming processes. The experimental study is dedicated to the identification of stress-strain flow and damage parameters by using the Nelder-Mead simplex algorithm optimization from the global measure of displacement and force. Applications are made to the simulation of thin sheet thermohydroforming using different die geometry to show the efficiency of the proposed methodology to localize plastic instability, thinning of the sheet and damage initiation under different forming
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Submitted on : Wednesday, September 11, 2019 - 12:16:28 PM
Last modification on : Monday, September 16, 2019 - 4:36:06 PM

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  • HAL Id : hal-02283895, version 1

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Faouzi Slimani, Abel Cherouat, Mahfoudh Ayadi, Mohamed Ali Rezgui, Ali Zghal. Modélisation expérimentale et numérique de la mise en forme des tôles minces à hautes températures avec remaillage adaptatif. 4th International Congress on Design and Modeling of Mechanical Systems, May 2011, Sousse, Tunisie. ⟨hal-02283895⟩

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