低碳金属板对带攻角侵彻弹体的动态响应仿真分析

为提高水面舰船结构抗半穿甲弹侵彻防护设计水平，采用LS DYNA仿真分析45钢Tayler杆撞击效应，并与试验结果进行对比分析，验证仿真分析方法的正确性。仿真分析圆柱形弹体斜侵彻和带攻角侵彻低碳金属靶板，认为弹体斜侵彻低碳金属板时的侵彻能力比带攻角侵彻时的侵彻能力差，且随着斜侵彻角度增加，弹体侵彻能力急剧下降。研究结果为水面舰船结构抗半穿甲弹侵彻设计提供思路，改变弹体姿态比改变弹体的攻角更有效。

Simulation analysis on dynamic response of penetration projectile with attack angle against low carbon metal plate

To improve the protection design level of the surface warship structure against the penetration of semi-armor-piercing projectile, the impact effect of 45-steel Tayler bar is analyzed by LS-DYNA. The correctness of the simulation analysis method is verified by comparing of the simulation results with the test results. The penetrations of cylindrical projectile against low carbon metal target plate with attitude angle and with attack angle are simulated. The results show that penetration ability of oblique penetration against low carbon metal target plate is worse than that with attack angle. With the increase of oblique penetration angle, the penetration ability of projectile decreases sharply. The analysis results provide an idea for the anti semi armor piercing projectile penetration design for surface warship structure, which is more effective and feasible by changing the projectile attitude instead of the attack angle.