Wang Haifu, Guo Huanguo, Geng Baoqun, Yu Qingbo, Zheng Yuanfeng
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China.
Materials (Basel). 2019 Aug 28;12(17):2768. doi: 10.3390/ma12172768.
The penetration enhancement behaviors of a reactive material double-layered liner (RM-DLL) shaped charge against thick steel targets are investigated. The RM-DLL comprises an inner copper liner, coupled with an outer PTFE (polytetrafluoroethylene)/Al reactive material liner, fabricated via a cold pressing/sintering process. This RM-DLL shaped charge presents a novel defeat mechanism that incorporates the penetration capability of a precursor copper jet and the chemical energy release of a follow-thru reactive material penetrator. Experimental results showed that, compared with the single reactive liner shaped charge jet, a deeper penetration depth was produced by the reactive material-copper jet, whereas the penetration performance and reactive material mass entering the penetrated target strongly depended on the reactive liner thickness and standoff. To further illustrate the penetration enhancement mechanism, numerical simulations based on AUTODYN-2D code were conducted. Numerical results indicated that, with increasing reactive liner thickness, the initiation delay time of the reactive materials increased significantly, which caused the penetration depth and the follow-thru reactive material mass to increase for a given standoff. This new RM-DLL shaped charge configuration provides an extremely efficient method to enhance the penetration damage to various potential targets, such as armored fighting vehicles, naval vessels, and concrete targets.
研究了反应材料双层药型罩（RM-DLL）聚能装药对厚钢靶的侵彻增强行为。RM-DLL由一个内部铜药型罩和一个外部聚四氟乙烯（PTFE）/铝反应材料药型罩组成，通过冷压/烧结工艺制造。这种RM-DLL聚能装药呈现出一种新颖的毁伤机制，它结合了前驱铜射流的侵彻能力和后续反应材料侵彻体的化学能释放。实验结果表明，与单反应药型罩聚能装药射流相比，反应材料-铜射流产生的侵彻深度更深，而侵彻性能和进入被侵彻靶体的反应材料质量强烈依赖于反应药型罩厚度和炸高。为了进一步阐明侵彻增强机制，基于AUTODYN-2D程序进行了数值模拟。数值结果表明，随着反应药型罩厚度的增加，反应材料的起爆延迟时间显著增加，这导致在给定炸高下侵彻深度和后续反应材料质量增加。这种新型RM-DLL聚能装药结构为增强对各种潜在目标（如装甲战车、海军舰艇和混凝土目标）的侵彻毁伤提供了一种极其有效的方法。
