某结构反应装甲金属板运动仿真研究

Simulation Study of Metal Plate's Movement of Some Structure's Explosive Reactive Armor

为研究射流引爆某结构反应装甲后,各金属板的运动情况,以及附加盖板或隔板位置变化对平行双层反应装甲金属板运动的影响,采用三维有限元仿真软件LSDYNA进行仿真,并对800μs时各金属板的速度及相对主装甲距离进行统计分析。仿真结果表明:当盖板与上层反应装甲距离d=6 mm时,下层反应装甲面板的速度最小,与主装甲的距离最近,此时下层反应装甲面板的最小运动距离为162 mm,时间为1 260μs;隔板与上层反应装甲背板相贴时,下层反应装甲面板的速度最小,与主装甲距离最近,此时下层反应装甲面板的最小运动距离为171 mm,时间为5 130μs。

For studying the movement result of each metal plate while certain structure explosive reactive armor（ERA） detonated by the jet, and the influence to all metal plates while the location of additional partition or cover changed, then simulated each metal plate＇s movement at the time 800 μs by 3D software LSDYNA, and the simulation results show that： when the distance between the cover and the upper ERA is 6 mm, the lower front plate＇s speed is the smallest and the distance is the closest, and the minimum distance is 162 mm while the time is 1 260 μs; while the partition close to the upper back plate, the lower front plate＇s speed is the smallest and the distance is the closest, and the minimum distance is 171 mm while the time is 5 130 μs.