南京理工大学学报（自然科学版）
南京理工大學學報（自然科學版）
남경리공대학학보（자연과학판）
JOURNAL OF NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY
2009年
6期
756-759
,共4页
爆炸成型%弹丸%战斗部%起爆方式%侵彻%任意拉格朗日欧拉算法
爆炸成型%彈汍%戰鬥部%起爆方式%侵徹%任意拉格朗日歐拉算法
폭작성형%탄환%전두부%기폭방식%침철%임의랍격랑일구랍산법
explosive forming%projectiles%warheads%blast ways%penetration%arbitrary Lagrangian-Eulerian algorithms
为获得在大炸高条件下具有良好飞行形态的线性爆炸成型弹丸(LEFP),该文主要利用通用有限元软件LS-DYNA3D,采用任意拉格朗日欧拉(ALE)算法,对在多棱和单棱线性起爆方式下的药型罩成型过程进行了数值模拟.对比两种起爆方式下LEFP头部和尾部的速度-时间曲线、药型罩各微元的速度梯度及断面形态,并且在5倍装药口径炸高下,进行了两种起爆方式的侵彻威力仿真.结果发现在多棱线性起爆方式下LEFP具有良好的外形和更强的侵彻威力,多棱线性起爆形成的LEFP侵彻威力相对单棱线性起爆的增益为5.2%以上.
為穫得在大炸高條件下具有良好飛行形態的線性爆炸成型彈汍(LEFP),該文主要利用通用有限元軟件LS-DYNA3D,採用任意拉格朗日歐拉(ALE)算法,對在多稜和單稜線性起爆方式下的藥型罩成型過程進行瞭數值模擬.對比兩種起爆方式下LEFP頭部和尾部的速度-時間麯線、藥型罩各微元的速度梯度及斷麵形態,併且在5倍裝藥口徑炸高下,進行瞭兩種起爆方式的侵徹威力倣真.結果髮現在多稜線性起爆方式下LEFP具有良好的外形和更彊的侵徹威力,多稜線性起爆形成的LEFP侵徹威力相對單稜線性起爆的增益為5.2%以上.
위획득재대작고조건하구유량호비행형태적선성폭작성형탄환(LEFP),해문주요이용통용유한원연건LS-DYNA3D,채용임의랍격랑일구랍(ALE)산법,대재다릉화단릉선성기폭방식하적약형조성형과정진행료수치모의.대비량충기폭방식하LEFP두부화미부적속도-시간곡선、약형조각미원적속도제도급단면형태,병차재5배장약구경작고하,진행료량충기폭방식적침철위력방진.결과발현재다릉선성기폭방식하LEFP구유량호적외형화경강적침철위력,다릉선성기폭형성적LEFP침철위력상대단릉선성기폭적증익위5.2%이상.
The purpose is to obtain a linear explosively formed projectile (LEFP) with a good flying form under large standoff. The LS-DYNA3D finite element analysis software and the arbitrary Lagrangian-Eulerian(ALE) algorithms are used to simulate the forming process of shaped charge liner initiated by more ridges and a single ridge. The head and trail axis speed-time curves of LEFP, speed grads of every liner curvature particulate and section forms under these two different blast ways are compared. The penetration power under different blast ways is simulated with a five-time charge caliber. The calculated results show that the LEFP initiated by more ridges has better shape and great penetration power. The penetration power of LEFP initiated by more ridges is 5.2 % higher than that by a single edge.
