Numerical Simulation on Conical Shaped Charge with Copper Liner in Several Typical Shapes

Abstract

Conical shaped charges with five types of liner geometries: (1) cone, (2) round-tipped cone (3) hemisphere, (4) ellipsoid, and (5) trumpet, have numerically been simulated to investigate jet formation and target penetration capabilities via LS-DYNA Multi-Materials Arbitrary Lagrangian Eulerian (MMALE) technique. The purpose is to observe the influences of liner shapes on performance of shaped charge setup and, the final behavior of such shaped charge devices. The explosive filling and the liner material are kept to be identical in the study. Simulation results show that the hemispherical liner brings out the lowest penetration performance, while the cone and round-tipped cone shaped liners result in highest performance, and, ellipsoid and trumpet liners are of middle performance, in comparison. Especially, shaped charges with both ellipsoid and trumpet liners present no remarkable discrepancy on penetration depth, but the entrance craters are of dramatically geometrical difference. Such penetration features are anticipated to be applicable in technical design of shaped charges for various specific applications.