Incremental deformation and penetration analysis of deformable projectile into semi-infinite target

In this paper, a new analytical method for projectile deformation and penetration into a semi-infinite target has been developed. This method is based on separated, successive and incremental steps. In deformation step, the target assumed rigid and the increment of projectile deformation was evaluated, whilst in penetration step, the projectile assumed rigid and the increment of penetration was evaluated. These sequential steps continued untill the projectile stopped. Furthermore, a series of ballistic tests have been carried out with ogival projectiles with striking velocity of 600– 900 m/s. The projectiles and target plates material has been chosen from 4 types of steel. In this way, 210 tests for 48 combinations of projectile, target and velocity have been carried out. Numerical simulation has been also performed using the LS-DYNA code. Comparison between the depth of penetration obtained by this analytical method and those of the experimental and numerical ones shows a good agreement.