基于有限元分析的地下毁伤目标定位仿真研究

Research on underground damage target location simulation based on finite element analysis

以地下毁伤性目标定位为研究背景,提出应用地震定位原理结合分布式测试系统对地下目标定位,并分析弹体45°和90°入侵角对目标定位的影响。采用LS-DYNA有限元分析软件对钻地弹不同入侵角度时的爆炸过程做了数值模拟仿真。通过仿真数据计算出定位结果并分析了误差产生的原因,得出45°、90°入侵角下定位误差分别为5.42%和5.35%,均属于正常误差范围之内。验证了地震定位原理在武器系统不同入侵角时地下毁伤目标定位中的实用性。

Based on the background of the damage target location in the underground,this paper proposes the application of the seismic location principle combined with the distributed test system to locate the underground target, and analyzes the impact of the 45° and 90° invasion angles on the target location.The LS-DYNA finite element analysis software was used to simulate the explosion process when the ground bombs were in different intrusion angles.The positioning results were calculated from the simulation data and the causes of the errors were analyzed.The positioning errors at 45° and 90° angles of invasion were found to be 5.42% and 5.35%,respectively,which were within the normal error range.The utility of the earthquake location principle in the target location of underground damage in different angles of invasion of the weapon system is verified.