预制破片对战斗部冲击起爆数值模拟

Numerical Simulation on Shock Initiation of Performed Fragment to Warhead

分析了高速条件下预制破片冲击起爆巡航导弹战斗部的作用机理,采用Lee-Tarver点火增长模型和AUTO-DYN程序对高速预制破片冲击起爆战斗部进行了数值模拟,着重分析了破片材料、直径、形状和被起爆战斗部装药及壳体对冲击起爆的影响.结果表明,对于相同质量的破片,大密度和不规则的破片更容易冲击起爆战斗部;通过采用重金属材料,增大破片直径,采用柱形或其它不规则破片,可以提高破片速度来提高破片冲击起爆战斗部的能力.

The mechanism of high-speed performed fragment shocking and initiating cruise missile warhead was analyzed. The high-speed fragment shocking and initiating warhead was simulated by using ignition and growth model and AUTODYN. The effect of material, diameter, shape of fragment and the charge and case of detonated warhead on shock and initiation was mainly studied. The result shows that the high density and irregular fragment with the same mass is easier to shock and initiate warhead. Using heavy metal and irregular fragment, increasing the diameter and velocity of fragment, the power of shock initiation can be improved.