起爆方式对可变形定向战斗部威力的影响  

Influence of Initiation Mode on Power of Deformable Directional Warhead

作　　者：杨亚东[1] 李向东[1] 伯雪飞 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094 [2]豫西工业集团有限公司军品研发中心,河南南阳473000

出　　处：《南京理工大学学报》2012年第5期762-766,772,共6页Journal of Nanjing University of Science and Technology

摘　　要：为了揭示变形后主装药的起爆方式对可变形定向战斗部威力的影响,该文利用通用有限元软件LS-DYNA3D对可变形定向战斗部的变形和定向飞散过程进行了数值模拟,研究了主装药径向和轴向起爆方式对破片速度和密度增益的影响。结果表明:径向起爆时,起爆点与端面中心的距离等于主装药半径,两起爆点与端面中心所形成的夹角为45°时,破片速度增益最大;轴向起爆时,两端同时起爆优于一端起爆和线起爆。与传统周向均布破片战斗部相比,目标方位上的破片密度增益为78.7%,速度增益为32.2%。In order to reveal the influence of initiation modes of the main charge on the power of de- formable warhead,the deforming and projectile processes of the deformable warhead are numerically simulated by the finite element analysis software LS-DYNA3D, and change laws of the fragment velocity and densities enhancement under the different radial and axial initiation modes of the main charge are studied here. The results show that, under the radial initiation, the enhancement of fragment velocity is maximum when the distance from the initiation point to the center of the end face equals the radius of main charge and the angle between the two lines formed by the initiation point and the center of the end face is 45°. The both ends initiation mode is better than one end initiation mode and the line initiation mode under the axial initiation. Comparied with the uniform warhead, the fragment density enhancement is 78.7% and the fragment velocity enhancement is 32.2% in the target direction when initiated by the both ends mode of the main charge.

关 键 词：爆炸力学 可变形定向战斗部 数值模拟 起爆方式 增益 

分 类 号：O383.3[理学—流体力学]