Simulation of impact and penetration with hydrocodes

A simulation methodology is presented to study the impact and penetration mechanism of projectiles into different targets. The purpose was to investigate the penetration processes, crater formation and residual velocities after penetration of the projectiles. Two cases with different impact velocities were considered. In the first case, simulation was carried out for hypervelocity impact of steel balls against steel plate targets at impact velocities ranging from 1.8 to 5.2 km/sec. Impact phenomenon was simulated using Autodyn 2D non-linear hydrocode using Eulerian solver. In the case of hypervelocity impact, simulation runs were repeated with Lagrangian and Smooth Particle Hydrodynamics (SPH) solvers and comparisons were made between the various numerical solvers. In the second case simulation of impact of steel ball projectiles against steel target plates was carried out using explicit finite-element analysis code LS DYNA for impact velocities ranging from 590m/s to 785m/s.