利用LS-DYNA有限元分析软件对某三罩式多爆炸成形弹丸(MEFP)的成型过程进行数值模拟研究,揭示了其成型机理,并研究了中心点起爆、三点同时起爆、四点同时起爆和八点同时起爆四种不同起爆方式对MEFP爆炸成形情况和性能参数的影响。研究结果表明:在多种不同方式起爆下,多点起爆形成的MEFP战斗部的药型罩能够形成外形良好的弹丸,且形成的弹丸能够沿着装药中心线,以较小的发散角度向前飞行,有利于侵彻装甲目标,考虑到成本以及实现的可能,其中以八点起爆为最佳。

LS-DYNA finite element hydrocode is used to simulate the formation process of MEFP was made. The formation mechanism was revealed, also the different ways of initiation, such as center point initiation, three points initiation, four points initiation and eight points initiation, were calculated in the numerical simulation. The result shows that MEFP under multi-point initiation way has a better aerodynamic shape, small departure angle and penetration ability. Among the different initiation ways, eight points initiation was most effective.