Numerical simulation on the penetrations of long-rod projectiles with different nose shapes

The processes of penetrating the semi-infinite rolled homogeneous armor (RHA) targets with four kinds of nose shapes of long-rod projectiles were studied by numerical simulation method, the effects of nose shapes on penetration were inspected emphatically. The results show that the depth of penetration (DOP) depends on pronouncedly the failure mechanism of the rod material, the variation of the nose shapes of long-rod projectiles results in slight difference of the penetration depths at the same condition for high strength material, but the nose profile of long-rod has a certain influence on the breakup of targets, especially on the cross-section of crater in the early stage.