爆破器材
爆破器材
폭파기재
2014年
6期
11-15
,共5页
郭帅%李小军%于小洁%陈智刚%裴思行%付建平
郭帥%李小軍%于小潔%陳智剛%裴思行%付建平
곽수%리소군%우소길%진지강%배사행%부건평
聚能装药%双层药型罩%爆炸成型弹丸%尾翼%数值模拟
聚能裝藥%雙層藥型罩%爆炸成型彈汍%尾翼%數值模擬
취능장약%쌍층약형조%폭작성형탄환%미익%수치모의
KEY WORDS] shaped charge%double-layer liners%explosively formed projectile ( EFP)%fins%numerical simulation
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。
為瞭研究內層藥型罩週嚮對稱開槽對爆炸成型彈汍( EFP)形成尾翼的影響,利用LS-DYNA顯示動力分析有限元程序,採用Lagrange算法,對雙層藥型罩聚能裝藥的成型過程進行數值模擬。對不同開槽參數的數值模擬結果進行對比分析,選擇數值模擬最佳結果進行試驗驗證。數值模擬與試驗研究所得結論基本吻閤。結果錶明:內層藥型罩週嚮對稱開槽結構能夠形成帶尾翼的串聯EFP。噹L/Da =0.20、W/Da =0.05時( Da 為裝藥直徑,L為開槽長度、W為開槽寬度),前後EFP長徑比最大,帶尾翼的串聯EFP的成型效果最佳。
위료연구내층약형조주향대칭개조대폭작성형탄환( EFP)형성미익적영향,이용LS-DYNA현시동력분석유한원정서,채용Lagrange산법,대쌍층약형조취능장약적성형과정진행수치모의。대불동개조삼수적수치모의결과진행대비분석,선택수치모의최가결과진행시험험증。수치모의여시험연구소득결론기본문합。결과표명:내층약형조주향대칭개조결구능구형성대미익적천련EFP。당L/Da =0.20、W/Da =0.05시( Da 위장약직경,L위개조장도、W위개조관도),전후EFP장경비최대,대미익적천련EFP적성형효과최가。
[ 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. Simu-lated 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/Da =0. 2 and W/Da =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.