横向运动板对长杆弹变形及运动影响的数值研究

利用Ls—DYNA软件对钨合金长杆弹垂直侵彻单层和双层横向运动钢板进行了数值计算。通过分析长杆弹的塑性变形、速度降、动能降和横向速度，得到了单层和双层板横向运动速度与影响长杆弹侵彻能力因素的关系。仿真结果表明：随着运动板速度的增加，运动板对长杆弹的侵蚀加剧，长杆弹的速度降、动能降增大；运动板相同速度下，虽然单层板的冲击能使长杆弹获得较大横向速度，但双层板比单层板对长杆弹的干扰效果更明显。

Numerical R.esearch of the Plates with Transverse Motion Influencing on the Deformation.and the Motion of the Long-rod Projectile

The process of the tungsten alloy long-rod projectile normally penetrating the steel sin- gle plate and the steel double plates both with transverse motion is calculated numerically by LS- DYNA code. The relationship of the transversal speed of the plates and the factors of the long-rod projectile which can influence the penetrating ability of the long-rod projectile are gained by analy- zing the plastic deformation, speed drop, kinetic energy drop and transversal speed of the long-rod projectile. The results show that as the speed of plate increases, the erosion of the projectile in- creases and there are larger speed drop and larger transversal speed and that the double plates dis- turb the long-rod projectile more seriously than the single plate does though the single plate causes larger transversal speed of the projectile when they have the same transversal speed.