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) | 929 - 934 | |
DOI | https://doi.org/10.1051/jp4:2006134142 | |
Publié en ligne | 26 juillet 2006 |
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 929-934
DOI: 10.1051/jp4:2006134142
Investigation of fused silica dynamic behaviour
F. Malaise, J.-M. Chevalier, I. Bertron and F. MalkaCentre d'Études Scientifiques et Techniques d'Aquitaine, BP. 2, 33114 Le Barp, France
Published online: 26 July 2006
Abstract
The survivability of the fused silica shields to shrapnel impacts is
a key factor for the affordable operation of the intense laser
irradiation future facility Laser Méga Joule (CEA-CESTA). This
paper presents experimental data and computational modelling for LMJ
fused silica upon shock wave loading and unloading. Gas-gun flyer
plate impact and explosively driven tests have been conducted to
investigate the dynamic behaviour of this material. Hugoniot states
and the Hugoniot Elastic Limit of LMJ fused silica have been
obtained. These experimental data are useful for determining some
constitutive model constants of the “Crack-Model”, a continuum
tensile and compressive failure model with friction based on
Rubin M. B. and Attia A. V.'s work. This model has been improved by
taking into account nonlinear elasticity. The numerical results
obtained by performing computations of the previous tests and some
ballistic impact tests are discussed. Further developments to
simulate the permanent densification and the solid-to-solid phase
transformation of fused silica are required.
© EDP Sciences 2006