摘要
为进一步提高偏心起爆定向战斗部的毁伤效能,在序贯起爆方式的基础上提出了4种线内非同步起爆方案,通过LS-DYNA仿真和求解破片外弹道方程,研究了线内起爆顺序、起爆延时和起爆线数目对军用车辆毁伤效能的影响。结果表明,通过调整线内起爆时序可以对破片轴向抛射角进行分段控制,4种线内非同步起爆方案均能有效提高毁伤效能;最佳起爆方案为偏心两线方案Ⅲ(自战斗部中下部的起爆点向两端依次起爆),起爆延时为1/2倍的相邻起爆点间传爆时间;相对于端面中心单点、偏心两线同时和偏心两线序贯起爆,该起爆方案下最大毁伤面积的增益分别为34.1%、24.7%和23.4%,且对战斗部炸点高度不敏感。
To further improve the damage efficiency of eccentric initiated aimable warhead,four kinds of in-line asynchronous initiation schemes are proposed based on the sequential initiation mode.By LS-DYNA simulation and solving the fragment exterior ballistic equation,the effects of the in-line initiation sequence,delay and the number of initiation lines on the damage efficiency of military vehicles are studied.The results show that the axial projection angle of fragments can be controlled by adjusting the initiation sequence in the line.Four kinds of in-line asynchronous initiation schemes can effectively improve damage efficiency.The best initiation scheme is eccentric two lines scheme-III(initiating from the middle and lower of warhead to both ends successively)whose initiation delay time is half the time of detonation spreading between adjacent initiation points.Compared with the single initiation point in the center of the top face,the eccentric two lines simultaneous initiation and the eccentric two lines sequential initiation,the gain rate of maximum damage area of this scheme is 34.1%,24.7%and 23.4%respectively,and this scheme is insensitive to the height of initiation location in the warhead.
作者
张树凯
王科伟
谢佳良
李晓刚
张浩宇
程立
ZHANG Shu-kai;WANG Ke-wei;XIE Jia-liang;LI Xiao-gang;ZHANG Hao-yu;CHENG Li(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China;North Special Energy Group,Xi′an Qinghua Company,Xi′an 710025,China;Military Representative Office of the Military Representative Office in Jilin of the Military Representative Bureau in Shenyang of the Air Force Equipment Department,Jilin Jilin 132021,China)
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2022年第1期73-80,共8页
Chinese Journal of Explosives & Propellants
基金
国家自然科学基金-NASF联合基金项目(No.U1530135)。
关键词
爆炸力学
定向战斗部
非同步起爆
毁伤效能
爆轰波碰撞
偏心多点起爆
explosion mechanics
aimable warhead
asynchronous initiation
damage efficiency
detonation wave collision
asymmetrical multi-points initiation
