Analysis on EFP Penetrating against Water-Partitioned Armor

Based on the experiments and numerical simulation of EFP penetrating against the water-partitioned armor, the velocity attenuation law of EFP in water is obtained by dimensional analysis. The relationship between the pressure of the water shock wave and the deflection of the latter target is established, which is validated by the experimental results. The influence of the water shock wave on the motion of EFP is also analyzed. The results in this paper provide remarkable benchmark in designing and optimizing the liner, as well as increasing the damage efficiency of the torpedo warhead.