Study on the mechanism of ceramic target against long rod penetration

By considering the effect of the damage on ceramic target resistance, a theoretical model to evaluate the anti-penetration ability of the ceramic target is presented in this paper. The penetration velocity of a long rod into ceramic targets is calculated by a hydrodynamic theory. Numerical simulations of long rod penetration into ceramic are performed, and the influence of the cover plate and the constraint sleeve on penetration results is discussed. It indicates that the anti-penetration ability of the ceramic-composite target with cover plate is higher than that of the target without cover plate; the damage in the target with cover plate initiates from the back developed by the tensile wave; the damage in the target without cover plate initiates from the front developed by the shock wave, but when the tensile wave begins to spread from the back, the tensile fracture and the impact fracture will spread simultaneously.