不同弹体对高压气瓶的撞击性能分析

Impact characteristics of different projectiles on the high-pressure gas cylinder

运用ANSYS/LS-DYNA软件对弹体撞击高压气瓶的过程进行数值模拟,得到弹头形状、子弹质量和接触面积不同时子弹穿透高压气瓶的临界速度和临界动能,分析了不同因素对子弹撞击性能的影响。结果表明,弹头形状对穿透动能的影响不大;在接触面积相同的情况下,随着子弹质量的增加,其穿透瓶体的速度逐渐降低,而所需的穿透动能逐渐增大;子弹与瓶体接触面积越大,需要的穿透动能越大。

The process of shrapnel impacting the high-pressure gas cylinder was simulated using the ANSYS/LS-DYNA.The critical velocity and kinetic energy of bullets penetrating through the highpressure gas cylinder at different nose shapes,projectile masses and contact areas were obtained.The factors influencing bullet impacting characteristics were analyzed.Results show that the nose shape of bullet does not greatly affect the penetrating kinetic energy;as the bullet mass increases,the penetrating velocity gradually decreases and the needed penetrating kinetic energy gradually increases at the same contact area for the gas cylinder;the larger the bullet contacts with the gas cylinder,the greater the needed penetrating kinetic energy.