J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 1077-1083
Meshless modelling of dynamic behaviour of glasses under intense shock loadings: Application to matter ejection during high velocity impacts on thin brittle targetsY. Michel, J.-M. Chevalier, C. Durin, C. Espinosa, F. Malaise and J.-J. Barrau
CEA-CESTA /DEV/SDET/LDDT, BP. 2, 33114 Le Barp,
Published online: 26 July 2006
The purpose of this study is to present a new material model adapted to SPH modelling of dynamic behaviour of glasses under shock loadings. This model has the ability to reproduce fragmentation and densification of glasses under compression as well as brittle tensile failure. It has been implemented in Ls-Dyna software and coupled with a SPH code. By comparison with CEA-CESTA experimental data the model has been validated for fused silica and Pyrex glass for stress level up to 35GPa. For Laser MegaJoule applications, the present material model was applied to 3D high velocity impacts on thin brittle targets with good agreement with experimental data obtained using CESTA's double stage light gas gun in term of damages and matter ejection.
© EDP Sciences 2006