Numerical and experimental study of an ogival projectile vertical perforating a medium thickness concrete target

In order to understand the law dominating the process of an ogival projectile perforating a medium thickness concrete target, the tests of the ogival projectiles of 60 mm diameter perforating concrete targets of (10-30)D thickness were carried out. The effect of concrete thickness on residual velocity was obtained in the tests. The meshless SPH method, combing the RHT concrete constitutive model and the p-α equation of state, was used to simulate perforation tests. Simulation results on perforation acceleration and damage process reveal that there are three stages in the perforation process, including catering, tunneling, and rear effect zone. Furthermore, the range of rear effect zone increases with increasing concrete thickness at the same projectile velocity. The comparison between the experimental results and the simulation results show that the current simulation model is able to simulate projectiles perforating concrete targets, and the simulation results provide insight into the perforation mechanisms.