结构间隙对复合靶板抗弹性能的影响

Influence of Structural Gap on Anti-Ballistic Performance of Composite Target Plate

为研究结构间隙对复合靶板抗弹性能的影响,探究弹体与靶板的响应规律,利用有限元软件对4种不同间隙结构的复合靶板在不同弹速冲击下的毁伤变形状态进行仿真分析,得到弹体的剩余速度和靶板各组成部分吸能占比的变化规律。结果表明:结构间隙会影响复合靶板的抗弹性能,在弹体速度相同的情况下,有结构间隙靶板的弹体剩余速度更小;在不同速度段,结构间隙布置在不同位置时发挥的作用是不同的;抗弹芯层在弹体侵彻过程中是吸收弹体动能的主要部分,吸能占比约为58%;靶板间结构间隙能提升靶板的抗弹性能。

In order to study the influence of structural gap on the anti-ballistic performance of composite target plates,exploring the response law of the projectile body and the target plate,it provides reference for practical engineering application.the damage deformation state of composite target with four different gap structures under the impact of different projectile velocities is simulated and analyzed by using finite element software,and the variation law of residual velocity of projectile and energy absorption ratio of each component of target is obtained.The results show that the structural gap will affect the anti-ballistic performance of the composite target plate.Under the same projectile velocity,the target plate with structural gap has a smaller residual velocity of the projectile.The role played by the gaps at different positions in different velocity ranges is also different.And the bullet-resistant core layer is the main part of absorbing the kinetic energy of the projectile during the penetration process,and its energy absorption accounts for about 58%during the penetration process of the projectile.The existence of structural gaps between target plates can improve the anti-ballistic performance of target plates.