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Parameter identification of advanced plastic strain rate potentials and impact on plastic anisotropy prediction |
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| Authors: | M Rabahallah T Balan S Bouvier B Bacroix F Barlat K Chung C Teodosiu |
| Institution: | 1. LPMTM-CNRS, UPR9001, University Paris13, 99 Av. J-B. Clément, 93430 Villetaneuse, France;2. LPMM, UMR7554, ENSAM Metz, 4 rue A. Fresnel, 57078 Metz Cedex 3, France;3. Alcoa Technical Center, Materials Science Division, 100 Technical Drive, Alcoa Center, PA 15069-0001, USA;4. Department of Materials Science and Engineering, Intelligent Textile System Research Center, Seoul National University, 56-1, Shillim-dong, Kwanak-gu, Seoul 151-742, Republic of Korea |
| Abstract: | 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. |
| Keywords: | Anisotropic sheet metals Strain rate potentials Parameter identification Plasticity Micromechanical model |
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