On the numerical implementation of elasto-plastic constitutive equations for metal forming
Article dans une revue avec comité de lecture
Date
2015Journal
Romanian journal of technical sciences - Applied MechanicsRésumé
This paper is devoted to the time integration of elasto-plastic constitutive models, in view of their implementation in finite element software for the simulation of metal forming processes. Both implicit and explicit time integration schemes are reviewed and presented in algorithmic form. The incremental kinematics are also treated, so that the proposed algorithms can be used stand-alone, outside a finite element code, or they can serve to implement non-classical incremental kinematics. Full algorithms are provided, along with examples of application to non-monotonic loading for a mild steel and a dual phase steel.
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Article dans une revue avec comité de lectureHADDAG, Badis; ABED-MERAIM, Farid; BALAN, Tudor (Elsevier, 2009)Sheet metal forming processes generally involve large deformations together with complex loading sequences. In order to improve numerical simulation predictions of sheet part forming, physically-based constitutive models ...
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Article dans une revue avec comité de lectureRABAHALLAH, Meziane; BALAN, Tudor; BARLAT, Frédéric (Elsevier, 2009)This paper reviews a class of anisotropic plastic strain-rate potentials, based on linear transformations of the plastic strain-rate tensor. A new formulation is proposed, which includes former models as particular cases ...
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Article dans une revue avec comité de lectureHADDAG, Badis; ABED-MERAIM, Farid; BALAN, Tudor (Springer Verlag, 2008)This work aims to study the strain localization in different sheet metal forming processesby the finite element method using advanced behaviour models. In order to improve the prediction of the formability limit of sheets ...
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Communication avec acteALTMEYER, Guillaume; ABED-MERAIM, Farid; BALAN, Tudor (Association Française de Mécanique, 2009)Différentes approches de modélisations ont été proposées pour prédire les phénomènes de localisation lors d’opérations de mise en forme de tôles métalliques par emboutissage. Des exemples de ces approches sont le principe ...
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Communication sans acteALTMEYER, Guillaume; ABED-MERAIM, Farid; BALAN, Tudor (2010)The originality of the approach used here is to present stability conditions of metallic materials modeled by general phenomenological laws and to apply them to the study of the formability of thin metallic sheets. The ...