双层药型罩内罩开槽对EFP形成尾翼的影响-《爆破器材》

文章信息/Info

Title:: Influence of Inner Liner with Grooves of Doublelayer Liners on the Formation of EFP with Fins

作者:: 郭帅^①; 李小军^②; 于小洁^③; 陈智刚^①; 裴思行^①; 付建平^①; ①中北大学地下目标毁伤技术国防重点学科实验室（山西太原，030051）
②中国人民解放军防化研究院（北京，102205）
③总装北京军代局（北京，100042）

Author(s):: GUO Shuai^①; LI Xiaojun^②; YU Xiaojie^③; CHEN Zhigang^①; PEI Sixing^①; FU Jianping^①; ①National Defense Key Laboratory of Underground Damage Technology, North University of China (Shanxi Taiyuan,030051)
②Research Institute of Chemical Defense, PLA(Beijing, 102205)
③The assembly of Beijing Army Generation Bureau(Beijing, 100042)

摘要:: 为了研究内层药型罩周向对称开槽对爆炸成型弹丸（EFP）形成尾翼的影响，利用LS-DYNA显示动力分析有限元程序，采用Lagrange算法，对双层药型罩聚能装药的成型过程进行数值模拟。对不同开槽参数的数值模拟结果进行对比分析，选择数值模拟最佳结果进行试验验证。数值模拟与试验研究所得结论基本吻合。结果表明：内层药型罩周向对称开槽结构能够形成带尾翼的串联EFP。当L/Da=0.20、W/Da=0.05时（Da为装药直径，L为开槽长度、W为开槽宽度），前后EFP长径比最大，带尾翼的串联EFP的成型效果最佳。

Abstract:: In order to study the influence of inner liner with grooves in circumferential symmetryon doublelayer shaped charge forming explosively formed projectile(EFP) with fins, the formation process of shaped charge assembled with doublelayer liners was simulated by using finite element software LSDYNA and Lagrange algorithm. Numerical results of grooves in different sizes on inner liner were analyzed, and the optimized result was selected for experimental studies. Simulated results are in good agreement with experiments. It is shown that the doublelayer liners with grooves on inner liner can form EFP with fins. When L/Da=0.2 and W/Da=0.05(Da is the charge diameter,L is the length of groove, and W is the width of groove), the lengthdiameter radios of the front and the back EFP are the largest, and the formation of tandem EFP with fins is the best.