基于LS-DYNA计算结果的破片战斗部虚拟打击仿真

Simulation of Fragment Warhead Attack Based on LS-DYNA Simulation Results

为了完整描述破片战斗部打击轻装甲目标的全过程,建立了破片战斗部打击仿真系统.该系统实现了基于LS-DYNA计算结果的动态破片场生成,使用射击迹线仿真模型确定了破片的飞行弹道,采用THOR模型分析了目标的侵彻毁伤.该系统使用标准C++和glut库进行程序编译,实现了虚拟打击仿真的三维漫游显示.以某战斗部为例进行了算例分析,并与试验进行了对比,结果表明,仿真与试验的破片着靶总数基本一致,但在分布上有一定的差别;利用该系统进行战斗部设计和评估能够减少靶场试验次数和降低试验费用.

In order to describe the whole process of fragment warhead attacking light armored target,a simulation system for fragment warhead attacking light armored target was established.In this system,dynamic fragment fields were formed based on LS-DYNA simulation results in which natural fragments were taken into account,and fragment trajectory were established by using the shot-line model.The effects of fragment impact on target were obtained by using the THOR model.This visual simulation system was compiled by Visual C＋＋ and glut,and the 3D roaming scene was realized.Taking a prefabricated fragment warhead for an example,the result of simulation by this system was compared with that of experiment.The result shows that the amount of fragment impacting target obtained by simulation accords basically with that obtained by experiment,but there is a difference in the distribution.It can reduce the times and costs of experiment to apply the system to evaluate and design warhead.