| Numéro |
J. Phys. IV France
Volume 134, August 2006
EURODYMAT 2006 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
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|---|---|---|
| Page(s) | 103 - 107 | |
| DOI | https://doi.org/10.1051/jp4:2006134017 | |
| Publié en ligne | 26 juillet 2006 | |
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 103-107
DOI: 10.1051/jp4:2006134017
Constitutive modeling of polymer materials at impact loading rates
J. Richeton1, S. Ahzi1, A. Makradi1 and K.S. Vecchio21 Institut de Mécanique des Fluides et des Solides, UMR 7507, Université Louis Pasteur, 67000 Strasbourg, France
2 Materials Science and Engineering Program, University of California, San Diego, La Jolla, CA 92093, USA
Published online: 26 July 2006
Abstract
Starting from physical basis, a robust three-dimensional
constitutive model for the finite strain response of amorphous polymers is
briefly presented. This model accounts for the high strain rate and
temperature effect. Intramolecular as well as intermolecular interactions
under large elastic-inelastic behavior are considered for the mechanisms of
deformation and hardening. In particular, it is found that the secondary
relaxations of polymer chains play an important role in the deformation
process for the high strain rates and low temperatures. For a wide range of
temperature and strain rate, the proposed constitutive model has been
validated in compression for three amorphous polymers:
polymethylmethacrylate (PMMA), polycarbonate (PC) and polyamideimide (PAI).
© EDP Sciences 2006