不同头部形状长杆弹侵彻过程的数值模拟

采用数值模拟技术研究了4种不同头部形状长杆弹体侵彻半无限厚轧制均质装甲(RHA)靶板的过程，重点考察弹体头部结构对侵彻过程的影响。结果表明：当靶板为高强度材料时，在相同的条件下，长杆弹体的侵彻深度是由弹体材料的失效机制决定，弹体头部形状对其影响较小；但长杆弹体头部的轮廓在撞击初始阶段对靶板的破坏有一定的影响，尤其是靶板开坑截面的大小。

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 iailure 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.