Numerical simulation of hypervelocity gold projectile penetrating into silicon carbide

The numerical simulation of hypervelocity gold projectile penetrating into silicon carbide with hydro-code AUTODYN is proposed. The penetrating process is computed with smooth particle hydrodynamics(SPH)method, SPH-Lagrange coupling method and Euler-Lagrange coupling method. The simulation results of the penetration velocity and erosion velocity are compared with the testing results. The particle size obtained by SPH method is 0.037 5 mm and the mesh sizes obtained by SPH-Lagrange coupling method and are 0.037 5 mm Euler-Lagrange coupling method 0.075 mm, respectively. Compared with other two methods, SPH method is better in simulating penetration velocity and erosion velocity, and is suitable to simulate material crashing, wavilness trajectory and interface dwell of the penetration process. SPH method is competent for simulating the hypervelocity penetrating into silicon carbide.