利用LS-DYNA数值仿真软件,分析计算整体式MEFP战斗部成形过程及弹丸总体性能变化情况。采用“升降法”改变起爆点密集度和柱壳装药厚度,系统分析不同起爆工况下弹丸对不同厚度柱壳装药的冲击起爆效能变化规律,可得出结论:在一定范围内起爆点等间距设置越密集弹丸总体性能越好,工况3(起爆点数为21)相较工况2(起爆点数为13)中心弹丸速度、周边弹丸速度分别提升5.4%和6.0%;工况3~工况5的弹丸性能具有相近性,中心弹丸均可成功冲击起爆18 mm厚柱壳装药,工况1、工况2中心弹丸仅能成功冲击起爆16 mm厚柱壳装药。整体式MEFP战斗部各弹丸冲击引爆柱壳装药时表现出明显性能差异,主要受柱壳形状和起爆方式等因素影响。

LS-DYNA numerical simulation software was used to analyze and calculate the forming process of the integral MEFP warhead and the overall performance of the projectile. The “lifting method” was adopted to change the density of initiation point and the thickness of cylindrical shell charge. The change rule of impact initiation efficiency of projectile on cylindrical shell charge with different thickness under different initiation conditions was systematically analyzed, and the following conclusions were obtained: In a certain range, the denser the equal distance between initiation points, the better the overall performance of projectiles. Compared with working condition 2, the velocity of central projectiles and surrounding projectiles in working condition 3 increased by 5.4% and 6.0% respectively. The performance of projectiles in working condition 3~condition 5 is similar. The center projectiles can successfully impact and detonate the 18 mm thick cylindrical shell charge, while the center projectiles in working condition 1 and 2 can only successfully impact and detonate the 16 mm thick cylindrical shell charge. The performance of each projectile of the MEFP warhead is obviously different when it impinges on the shell charge, which is mainly affected by the shell shape and initiation mode.