CUMULATIVE EFFECT BY HIGH-VELOCITY INTERACTION

The computer simulation (in r-z-geometry) of the cumulative effect due to high-velocity (1-5 km/s) impact interaction of projectiles having conical cavity with different thin screens and massive targets, arrang ed behind the screens, as well as of the destruction processes in thes e systems are carried out using 2-D hydrodynamical code [1] with allow ance made for thermo-physical and reological properties of real constr uctive materials. It has been established that at high conic angles (a lpha greater than or equal to 120 degrees) the return cumulative effec t [2,3] takes place. In the case of sharp angles a a new hydrodynamica l regime of cumulation, double or triple cumulation with return jet re flection, may be realized through high velocity impact of a projectile having a conic cavity on the colliding side with a thin metallic scre en. The results of the computer simulation are in a good agreement wit h both the available experimental data [4] and the analytical estimati ons in terms of a hydrodynamical theory of cumulation [5].