装填系数对破甲杀伤复合战斗部威力影响的数值模拟

Numerical Simulation of the Influence of Charge-shell Mass Ratio on the Damage Power of Anti-armor and Anti-personnel Composite Warhead

为了提高破甲杀伤复合战斗部的毁伤威力,研究了装填系数对战斗部破甲和杀伤威力的影响。采用理论分析的方法,计算了战斗部装填系数从0.71增大到2.00时破片的成型和杀伤半径;采用非线性有限元软件LS DYNA,对比分析了战斗部装填系数为0.80、1.00、1.20、1.40和1.60时成型射流的破甲深度,得到了装填系数与破片杀伤半径、成型射流破甲深度的关系。结果表明,随着装填系数从0.71增大到1.86,杀伤半径从9.1m增大到10.2m;继续增加装填系数至2.00,杀伤半径不再增大;随着装填系数的增加,破片平均质量减小;装填系数从0.80增加到1.60过程中,破甲深度先减小后增大,最大破甲深度为143.30mm。

To improve the damage power.of anti-armor and anti-personnel composite warhead,the effect of charge-shell weight ratio on the armor-penetrating and killing power of warhead was researched. The formation and killing radius of fragments were calculated by theoritical analysis mehtod when the charge-shell mass ratio of warhead increased from 0.71 to 2.00. A non-linear finite element software,LS-DYNA,was used to compare and analyze the depth of armor penetration by molding jet when the charge-shell mass ratio of warhead was 0.80,1.00,1.20,1.40 and 1.60,and the relationship of the charge-shell mass ratio vs. the killing radius of fragments and the depth of armor penetration by molding jet was obtained. Results show that the killing radius increases from 9.1 m to 10.2 m with the increase of charge-shell mass ratio from 0.71 to 1.86. The killing radius doesn 't increase anymore when the charge-shell mass ratio increases to 2.00. The average weight of fragments decreases with the increase of charge-shell mass ratio. The depth of armor penetration decreases first and then increases with the increase of charge-shell mass ratio from 0.80 to 1.60,and the maximum perforation deep is 143.30 mm.