双层楔形飞板爆炸反应装甲干扰聚能射流的数值模拟

Numerical Simulation of Disturbance by Double-Layer Explosive Reactive Armor with Wedged Flying-Plate on Jet

为得到干扰聚能射流能力更好的爆炸反应装甲,在经典爆炸反应装甲的基础上,设计了一种双层楔形飞板爆炸反应装甲。利用ANSYS/LSDYNA-3D仿真软件对3种不同方案进行了模拟计算,分别对各方案中飞板飞行形态、逃逸射流特性、射流的动能变化以及聚能射流对靶板的侵彻深度进行了分析。结果表明:夹层炸药引爆后,楔形飞板在向外飞出的同时具有一定的旋转特征,合理的摆放结构能够增大飞板与射流的作用面积;聚能射流在穿过反应装甲后,动能急剧下降,穿深能力降低,方案二聚能射流侵彻深度最浅,方案三次之,方案一最深,表明方案二具有良好的防护效果。对楔形飞板的研究丰富了爆炸反应装甲的结构设计,为反应装甲的进一步研究提供了理论参考。

Based on the traditional explosive reactive armor （ERA）,we designed a structure of double-layer ERA with wedged flying-plates,to achieve the best performance in jet disturbing.By using the simulation software ANSYS/LSDYNA-3D,we simulated 3 different schemes of ERA structures,and analyzed the flying states of flying-layers,the character of escaped jet,the kinetic energy of jet and the penetrating depth of target by jet separately.The results show that the flying-layer tended to rotate after the sandwich explosive were detonated,and a proper structure arrangement helped to enlarge the active area between the jet and the flying-layer.The kinetic energy of jet declined greatly after across the ERA,resulting in a lower penetrating depth.Of the 3 schemes,Scheme 2 has the smallest penetrating depth by jet into the target,the next is Scheme 3,while Scheme 1 has the maximum penetrating depth,indicating that the structure of Scheme 2 has the best protection effect.This study on the wedged double-layer ERA enriched the structure design of ERA,providing theoretical reference for its further research.