起爆位置对预制破片飞散特性影响仿真研究  

Simulation on the Effect of Detonation Position on the Dispersion Characteristics of Prefabricated Fragments

作　　者：王英霖 周力 周正炜 李春艳 WANG Yinglin;ZHOU Li;ZHOU Zhengwei;LI Chunyan(The 713 Research Institute of CSSC,Zhengzhou 450015,China)

机构地区：[1]中国船舶集团有限公司第七一三研究所,河南郑州450015

出　　处：《弹道学报》2024年第4期48-54,共7页Journal of Ballistics

摘　　要：为研究小口径预制破片弹药在末端防御中的毁伤效能,采用有限元方法对预制破片弹战斗部的起爆过程进行模拟计算,分别研究装药底部中心位置起爆、单点偏心起爆、双点对称起爆、中心-偏心双点起爆4种起爆形式下,预制破片飞散的特性,获得预制破片平均终速、平均飞散角及分布占比的变化规律。研究结果表面:装药底部中心起爆时,预制破片的飞散速度存在分层现象,71.7%的破片速度在300~800 m/s之间,平均飞散终速约为687.1 m/s,且约91.7%的破片飞散角度分布在±45°区间内。改变装药起爆位置后,预制破片的平均飞散终速发生变化,单点偏心起爆时,随着偏心距离的增加,破片的平均飞散终速减小约1.2%~2.5%;双点起爆2种工况下,预制破片的飞散终速随偏心距离的增加呈现减小-增加-减小的趋势,适当增加偏心距离,破片平均飞散终速提升约5%。在偏心起爆方式下,破片的平均飞散角度随着起爆位置偏心距离的增加而波动减小。因此,为提升战斗部的毁伤能力,对于双点起爆方式,可适当增加起爆点间的偏心距离;对于单点起爆方式,则应适当缩小偏心距离。研究结果可为指导预制破片弹药战斗部的设计提供参考。In order to study the lethal effect of small-caliber prefabricated fragmentation warheads in terminal defense,finite element method was used to simulate the detonation of prefabricated fragmentation warheads.The dispersion characteristics of fragmentation under four detonation conditions:central detonation at the bottom of the charge,single-point off-center detonation,dual-point symmetrical detonation,and dual-point center-off-center detonation was studied.The average final velocity and average scattering angle of the prefabricated fragments,as well as the distribution ratio,under the four detonation conditions were obtained.The research results show that when the detonation position is located at the contral-bottom of the charge,the scattered final velocity of 71.7%of prefabricated fragments is between 300-800 m/s.The scattered final velocity of the prefabricated fragments is approximately 687.1 m/s,and about 91.7%of the fragments'scattering angle are distributed within±45°.After changing the detonation position of the charge,the average scattered final velocity of the prefabricated fragments changes.The average scattered final velocity of the fragments decreased in average final velocity by approximately 1.2%-2.5%,as the off-center distance increased under single-point off-center detonation condition.For the dual-point detonation conditions,the average scattered final velocity of the prefabricated fragments showed a trend of decreasing-increasing-decreasing under dual-point detonation conditions.The average final velocity of fragments can be increased by about 5%when the eccentricity distance is increased appropriately.The average scattering angle of the fragments decreased with the increase of the off-center distance of the detonation position for the off-center detonation.Therefore,in order to enhance the damage capability of the warhead,the off-center distance of the detonation points can be appropriately increased for the dual-point detonation method,For the single-point detonation method,the off-center d

关 键 词：预制破片 起爆位置 飞散速度 飞散角 数值模拟 

分 类 号：TJ413.1[兵器科学与技术—火炮、自动武器与弹药工程]