Simulation and test on the penetration performancen of 10^# steel and copper EFP

The test on the penetration performance of the 10# steel and copper EFP to the 603 RHA was carried out. In order to analyze the internal causes what make the differences of penetration performance between the 10# steel EFP and copper EFP, the forming and penetration process of two kinds of EFP were simulated by ANSYS/ LS-DYNA. The results show that the penetration ability of 10 # steel EFP is worse than the copper EFP,but the reaming ability is much better, the entrance aperture is about 1.5 times to the copper EFP. Considering that the differences in penetration performance are caused by the material performance of liner, the shape of EFP and the velocity distribution,whereas the differences in entrance dimension of target are determined by the fin dimension.