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Communication Dans Un Congrès International Journal of Material Forming Année : 2008

Modeling of plastic anisotropy with reduced polycrystalline models. Application to aluminum alloys

Gilles Rousselier
F. Barlat
  • Fonction : Auteur

Résumé

The modeling of deviations from isotropic hardening still is a difficult task for macroscopic models, in particular for non-proportional loading paths. The alternative polycrystalline models suffer from large CPU time in FE analyses and do not always give simultaneously a good description of flow stresses and transverse strain rates. Due to a specific parameter calibration procedure, a “reduced” polycrystalline model with 8 orientations only is in excellent agreement with all experimental curves for a 2090-T3 aluminum sheet. FE calculations of a punch test with contact and friction give CPU times only 15% larger than with a macroscopic model.
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Dates et versions

hal-00391666 , version 1 (19-08-2010)

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Gilles Rousselier, F. Barlat. Modeling of plastic anisotropy with reduced polycrystalline models. Application to aluminum alloys. 11th ESAFORM Conference on Material Forming, Apr 2008, Lyon, France. pp.269-272, ⟨10.1007/s12289-008-0352-1⟩. ⟨hal-00391666⟩
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