| Autor: |
Barbe, F., Parisot, R., Forest, S., Cailletaud, G., Barbe, F., Parisot, R., Forest, S., Cailletaud, G. |
| Zdroj: |
Journal de Physique IV - Proceedings; September 2001, Vol. 11 Issue: 1 pPr5-277-Pr5-284, 2775280p |
| Abstrakt: |
Homogenization-based estimates of the effective behaviour of elastoviscoplastic polycrystals usually resort to approximations like that of an inclusion embedded in the homogeneous equivalent medium in the case of the self-consistent scheme. We propose here to replace this idealized intermediate problem by the actual computation of a polycrystalline representative volume element. Computations of a cube made of 200 zinc grains are presented and used to calibrate the scale transition rule of a simplified homogenized polycrystal model. A coupled identification procedure is presented to determine both intragranular material parameters and scale transition parameters from experimental tension, creep and relaxation tests. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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