PENETRATION INTO THICK TARGETS - REFINEMENT OF A 2D DYNAMIC PLASTICITY APPROACH

Generalizations have been made to the two-dimensional penetration and perforation analysis of Ravid and Bodner (1983) for blunt nosed, rigid projectiles impacting viscoplastic targets in the ordinary ballistic range. The new developments consist of consideration of ogival, conica l, and spherical projectile nose shapes, possible alterations of the p lastic flow field due to deep penetrations, thermo-mechanical coupling leading to thermal softening, and the addition of a requirement on th e inertial work rate of target material.