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Damage prediction in the deep drawing of thin sheets

Abstract : This work deals with the study of advanced approach for modelling and the simulation in the deep drawing processes in order to optimize their technological parameters with respect to the damage occurrence. This allows to have coupled constitutive equations able to predict when and where micro defects can take place during the sheet deep drawing process. An advanced elastoplastic model based on mixed isotropic-kinematics hardening together with Hill type anisotropic plastic flow is fully coupled with isotropic ductile damage. First the fully coupled constitutive equations are summarized and their numerical aspects are discussed. The local integration procedure using the implicit scheme applied to a reduced number of constitutive equations is described. The global resolution procedure is also described using a dynamic explicit resolution strategy. This procedure has been applied to “optimize” various deep drawing processes with respect to damage occurrence. Finally an application is made to the simulation of the Swift deep drawing. A comparison with experimental results is also presented.
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Submitted on : Thursday, September 12, 2019 - 3:22:20 PM
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Mourad Khelifa, Khemais Saanouni, Abel Cherouat. Damage prediction in the deep drawing of thin sheets. Mécanique et Industries, Elsevier, 2006, 7 (5-6), pp.465-473. ⟨10.1051/meca:2007004⟩. ⟨hal-02285160⟩



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