Development of a new algorithm for the time integration of rate-independent crystal plasticity models
Communication avec acte
Auteur
BEN BETTAIEB, Mohamed ABED-MERAIM, Farid Résumé
The aim of this paper is to develop a new efficient integration scheme, able to integrate the constitutive equations for rate-independent theory of crystal plasticity at finite strain. This algorithm proposes an efficient method to determine the set of active slip systems and the corresponding slip rates. This method is based on the use of a smooth formulation of the Schmid law. The issue of nonuniqueness in the determination of slip rates can be overcome by using two different numerical techniques.
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Chapitre d'ouvrage scientifique;BEN BETTAIEB, Mohamed; ; ABED-MERAIM, Farid ; ; (Springer International Publishing, 2019)
In many engineering applications (automotive, computer and mobile device industries, etc.), magnesium alloys have been widely used owing to their interesting physical and mechanical parameters. However, magnesium alloys ...
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An anisotropic model with linear perturbation technique to predict HCP sheet metal ductility limit Communication avec acte;BEN BETTAIEB, Mohamed; ABED-MERAIM, Farid ; ; ; (2021)
In this paper, hexagonal closed packed (HCP) sheet metal ductility for a viscoplastic material is analyzed by using a linear perturbation technique. It can be used for the analysis of localized necking. This technique is ...
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Article dans une revue avec comité de lecture;BEN BETTAIEB, Mohamed; ABED-MERAIM, Farid ; ; ; (Elsevier, 2020)
In the present contribution, a two-surface plasticity model is coupled with several diffuse and localized necking criteria to predict the ductility limits of hexagonal closed packed sheet metals. The plastic strain is ...
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An Anisotropic Model with Linear Perturbation Technique to Predict HCP Sheet Metal Ductility Limit Chapitre d'ouvrage scientifique;BEN BETTAIEB, Mohamed; ABED-MERAIM, Farid ; ; ; (Springer International Publishing, 2022)
In this paper, hexagonal closed packed (HCP) sheet metal ductility for a viscoplastic material is analyzed by using a linear perturbation technique. It can be used for the analysis of local-ized necking. This technique is ...
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Communication avec acte;BEN BETTAIEB, Mohamed; ; ABED-MERAIM, Farid ; ; (Springer, 2018)
In many engineering applications (automotive, computer and mobile device industries, etc.), magnesium alloys have been widely used owing to their interesting physical and mechanical parameters. However, magnesium alloys ...