导弹撞击水幕动态响应数值模拟研究

Numerical Simulation Study of Projectile Dynamic Response Impacting Water Curtain

利用ANSYS/LS-DYNA有限元仿真软件,对掠海飞行导弹撞击水幕的动态过程进行模拟,分析了水幕厚度对导弹飞行速度、弹体载荷以及弹体头部压力的影响。分析结果表明:水幕厚度变化对弹体飞行速度变化影响很小;导弹整体过载与水幕厚度以及弹体初速有关,水幕厚度小于0.4 cm或大于8 cm时弹体的轴向过载随弹体速度增加而增加;当弹体飞行速度在300 m/s左右,弹体头部获得最大的冲击压力。数值研究结果为分析研究爆炸水幕形成技术以及水幕反导毁伤机理提供了数据支撑。

The slightly sea flying missiles impacting water curtain is simulated by ANSYS/LS-DYNA fi- nite element simulation software. The effects to the missile flight speed, load, and projectile head pres- sure are analyzed with the changes of water curtain thickness. The results show that water curtain thick- ness variation has little effect on missile flight speed change. Missile overall overload is determined by water curtain thickness and projectile initial velocity. Missile axial overload is improved as the projectile velocity increased when water curtain thickness is less than 0.4 em or greater than 8 cm. Projectile head get maximum impact pressure when the missile flight speed is at 300 m/s. The result of numerical simu- lation can provide important data support for the research on explosion water curtain forming technology and water curtain antimissile damage mechanism.