Numéro
J. Phys. IV France
Volume 134, August 2006
EURODYMAT 2006 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) 379 - 384
DOI https://doi.org/10.1051/jp4:2006134058
Publié en ligne 26 juillet 2006
EURODYMAT 2006 - 8th International Conference on Mehanical and Physical Behaviour of Materials under Dynamic Loading
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 379-384

DOI: 10.1051/jp4:2006134058

Effects of liner grain size on shaped – charge jet performance: A combined experimental/numerical/analytical approach

J. Petit1, V. Jeanclaude2 and C. Fressengeas2

1  DGA Centre d'Études de Gramat, BP. 80200, 46500 Gramat, France
2  Laboratoire de Physique et Mécanique des Matériaux, Université Paul Verlaine - Metz/CNRS, Ile du Saulcy, 57045 Metz Cedex, France


Published online: 26 July 2006

Abstract
Experimental data on the fragmentation of copper shaped-charge jets are presented. A combined numerical/analytical analysis is designed to describe shaped-charge jet break-up. The method overcomes drawbacks from exclusively numerical or analytical analyses, such as mesh sensitivity or oversimplified description. It yields predictions for break-up time, total number and cumulative length of fragments in fairly good agreement with the experimental data. The dependence of fragmentation characteristics in the liner grain size is well predicted, except for the leveling out of performances at very large grain size. A discussion is provided.



© EDP Sciences 2006