Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
786582 | International Journal of Plasticity | 2008 | 21 Pages |
Abstract
Constitutive equations are proposed in order to describe the elasto-viscoplastic damage behaviour of polymers. The behaviour is well accounted for by a modified Bodner–Partom model comprising hydrostatic and void evolution terms. The true stress–strain and volumetric strain behaviour of typical rubber-toughened glassy polymers (RTPMMA and HIPS) were experimentally determined at constant local true strain rate by using a video-controlled technique. Successful agreement is obtained between experimental results and the proposed model.
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
F. Zaïri, M. Naït-Abdelaziz, J.M. Gloaguen, J.M. Lefebvre,