基于LS-DYNA的橡皮碰击弹非致命效应仿真研究

Simulation to Non-lethal Efficiency of Rubber Hit Grenade based on LS-DYNA

摘要:

为解决橡皮碰击弹对人体的非致命效应不确定的问题，依据防暴动能弹的致伤判据来确定橡皮碰击弹的基本尺寸，从理论和仿真实验的角度分析橡皮碰击弹的安全性及可靠性。采用八节点六面体单元SOLID164来模拟橡皮碰击弹和皮肤模型，橡皮碰击弹和皮肤的材料选用*MAT—PLASTIC—KINEMATIC，利用有限元软件LS-DYNA对人体的打击效果进行仿真。结果表明，橡皮碰击弹打击皮肤后由圆柱状体变为均匀的圆饼状并在相互接触的表面形成最大的应力分布；橡皮碰击弹以80m/s的初速作用于皮肤时，弹体在1ms内形变作用明显而且比动能未超过12.0J/cm2，皮肤表层未发生破裂和穿透现象且作用效果好。由此可知，橡皮碰击弹在对人体打击时安全性高、打击准确、作用效果明显，是一种安全有效的弹种。

Abstract:

(Equipment Engineering College, Armed Police Force Engineering University, Xi’an Shanxi 710086,China): Concerning the uncertainty of non-lethal efficiency in using rubber hit grenade, this paper elaborates the riot projectile injury criterion and defines the basic sizes of rubber hit grenade. By using the LS-DYNA finite element analysis software and analysing data simulation of process when person’s skin is hit by rubber hit grenade, which can fully analyze the safety, reliability and actual combat’s effect of hitting person according to theory of analysis and data simulation. The results show that rubber hit grenade has advantages of high security, combating accurate and low cost and provides a safe and effective bomb for the Armed Police Force to carry out diversity tasks.