PARAMETER IDENTIFICATION OF ADVANCED PLASTIC POTENTIALS AND IMPACT ON PLASTIC ANISOTROPY PREDICTION

In the work presented in this paper, several strain rate potentials are examined in order to analyze their ability to model the initial stress and strain anisotropy of several orthotropic sheet materials. Classical quadratic and more advanced non-quadratic strain rate potentials are investigated in...

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Bibliographic Details
Published inInternational journal of plasticity Vol. 25; no. 3
Main Authors Rabahallah, Meziane, Balan, Tudor, Bouvier, Salima, Bacroix, Brigitte, Barlat, Frédéric, Chung, Kwansoo, Teodosiu, Cristian
Format Journal Article
LanguageEnglish
Published Elsevier 01.03.2009
Subjects
Engineering Sciences
Mechanics
Mechanics of materials
Micromechanical model
Anisotropic sheet metals
Strain rate potentials
Plasticity
Parameter identification
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Summary:In the work presented in this paper, several strain rate potentials are examined in order to analyze their ability to model the initial stress and strain anisotropy of several orthotropic sheet materials. Classical quadratic and more advanced non-quadratic strain rate potentials are investigated in the case of FCC and BCC polycrystals. Different identifications procedures are proposed, which are taking into account the crystallographic texture and/or a set of mechanical test data in the determination of the material parameters.
ISSN:0749-6419
DOI:10.1016/j.ijplas.2008.03.006