撞击起爆中EFP模型等效的可行性仿真分析  

Feasibility Simulation Analysis of EFP Model Equivalent in Impact Detonation

作　　者：林建清 郑宇[2] LIN Jian-qing;ZHENG Yu(Jiangnan Electromechanical Design Institute,Guiyang Guizhou 550009,China;ZNDY of Ministerial Key Laboratory,Nanjing University of Science and Technology,Nanjing Jiangsu 200094,China)

机构地区：[1]江南机电设计研究所,贵州贵阳550009 [2]南京理工大学智能弹药实验室,江苏南京210094

出　　处：《计算机仿真》2021年第7期12-16,共5页Computer Simulation

摘　　要：为了研究撞击起爆中爆炸成型弹丸(Explosively Formed Projectile, EFP)模型等效的可行性,利用Ls-Dyna仿真软件,建立聚能装药数值仿真模型,将炸药驱动形成的EFP直接进行等效建模,对等效前后的EFP的侵彻能力和撞击起爆能力进行数值仿真研究,分析了EFP和等效EFP侵彻性能及撞击起爆中的起爆时间、爆轰时间以及起爆距离。仿真结果表明:EFP等效前后的侵彻性能参数最小误差存在于侵彻后弹坑口部直径,其值为1.94%,最大误差存在于侵彻深度,其值为6.96%;撞击起爆性能参数最大误差存在于起爆距离,其值为7.2%,因此在撞击起爆中EFP模型等效是可行的。In order to study the feasibility of the equivalent model of explosively formed projectile(EFP) in impact initiation, the numerical model of shaped charge was established by using Ls-dyna simulation software. The explosively formed projectile driven by explosive was modeled directly. The penetration and impact initiation capabilities of EFP before and after the equivalent model were simulated numerically. The penetration performance of EFP and equivalent EFP,the initiation time, detonation time and initiation distance in impact initiation were analyzed. The simulation results show that the minimum error of the penetration performance parameters before and after EFP equivalence exists in the diameter of crater after penetration, its value is 1.94%, and the maximum error exists in the penetration depth, its value is 7.2%. Therefore, the EFP model equivalent is feasible in the impact initiation.

关 键 词：爆炸成形弹丸 撞击起爆 模型等效 仿真分析 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]