Numerical simulation of non-spherical projectiles hypervelocity impact on spacecraft shield configuration

Numerical simulations of non-spherical projectiles hypervelocity impact on single bumper shield at normal angles were carried out using the SPH (smoothed particle hydrodynamics) technique of AUTODYN hydro-codes. The results of 2D and 3D simulation were given. Effects of projectile aspect ratios with different shapes and impact orientations, etc. on characteristics of debris cloud and module-wall damage sizes produced by hypervelocity impact on shield configuration were investigated with the same mass and velocity. Simulation results were compared with the characteristic of debris cloud and module-wall damage sizes created by spherical projectiles. It is shown that a projectile has a larger aspect ratio, it has a higher perforation capability; debris cloud shapes, mass distribution, fragmentation degree and perforation capability created by non-spherical projectiles are different with various impact orientations.