为分析来袭弹丸撞击网板的过载特性,利用数值仿真软件LS/DYNA,对不同情况来袭弹丸撞击不同参数网板进行模拟,获取来袭弹丸撞击网板的加速度曲线。结果表明弹丸最大加速度随着弹丸速度、网板钢丝直径、弹径与网孔边长比值增大而增大,随着弹丸质量增大而减小;而着靶角从0°增大到40°,弹丸最大加速度先减小后增大。不同速度弹丸撞击网板的诱爆试验结果与仿真结果相符,验证仿真模型的正确性,为此类主动防护系统设计提供参考。

In order to analyze the deceleration characteristics of a projectile impacting the porous plate, the numerical simulation software LS-DYNA is used to simulate different projectiles impacting porous plate with different parameters to get the acceleration graphs of the projectile. The results indicate that the maximum acceleration of the projectile would increases with increasing of the impact velocity, the diameter of the rebar and the ratio of the diameter of the projectile to the hole; and the acceleration would decreases with increasing of the mass of the projectile. With the target angle increasing from 0 degree to 40 degrees, the maximum acceleration of the projectile decreases firstly and then increases. The experimental results of explosion induced by projectiles at different velocity on the porous plate are consistent with the simulation results. And this verifies the correctness of the simulation model and provides reference for the design of this kind of active protection system.