球形头部弹丸侵彻运动靶板的数值模拟

Numerical Simulation of Spherical Head Projectile Penetrating into the Moving Target

为研究球形头部弹丸高速侵彻运动靶板的侵彻规律,运用LS-DYNA动力分析软件仿真研究了不同条件下球形头部弹丸对靶板的正侵彻效应,获得了运动靶板厚度、材料和弹丸着速3种参数对侵彻过程中弹丸弹道偏移、翻转角度和剩余速度的响应规律。结果表明,随着着速的提高,弹丸翻转幅度和弹道偏移量逐渐减小;随着靶板厚度的增加,弹丸正向翻转角度和轴向剩余速度显著减小,而弹道偏移量增大;3种材料运动靶板中,4340钢靶对弹丸弹道偏移、翻转角度和剩余速度的影响最大,Weldox460钢次之,LY12铝最小。

In order to study the penetration rule of high velocity spherical head projectile penetrating into the moving target plate,using LS-DYNA dynamic analysis software simulating and studying the effect of the spherical head projectile on the target penetration in different conditions. The response of how the the thickness of the moving target,the material and the velocity of the projectile three factors affect the projectile trajectory,the turning angle and the residual velocity in the penetration process is obtained. Results show that with the increase of speed,the amplitude and the offset of the projectile are gradually reduced. With the increase of the thickness of the target plate,the forward turning angle and the axial velocity of the projectile are significantly reduced and the trajectory offset increases. Of the three materials,the 4340 steel target is the biggest influence on the trajectory deviation,the turning angle and the residual velocity of the projectile,the second is Weldox460 stell,and the least is LY12 aluminum.