壳体性质对爆炸成形弹丸性能的影响

Influence of Case Qualities on EFP Performance

利用LS-DYNA有限元程序对带壳EFP结构的成形过程进行数值模拟,研究了壳体的材料以及厚度对EFP性能的影响规律。研究表明,壳体材料的密度和厚度的增加将有利于提高EFP的速度和密实度;对于某一特定的EFP装药结构,可确定一个壳体临界厚度,使形成的弹丸长度达到最大。研究结果可应用于EFP战斗部结构优化设计。

The formative process of cased explosive formed projectile（EFP） was simulated with LS- DYNASD and the influence of material and thickness of ease on the performance of EFP was investigated. It was found that increase in ease＇ density and thickness is helpful for enhancing velocity and compactness of EFP. As a given EFP configuration, critical temperature of ease can he determined to ensure maximum length of the formed projectile. The research result can be applied to optimal design of EFP warhead.