为进一步提高爆炸成型弹丸(EFP)的侵彻深度和破甲后效,药型罩采用3层偏心亚半球结构,利用ANSYS/LS-DYNA软件对3层偏心亚半球罩聚能战斗部侵彻体成型过程进行数值模拟,具体分析了曲率半径、壁厚、材料等因素对其成型的影响规律。研究结果表明:采用3层药型罩结构可以形成前后分离的串联EFP战斗部,当药型罩材料为紫铜,曲率半径与装药直径比值为0.9,药型罩总壁厚为6mm,外、中、内3层药型罩的壁厚比值为1:3:2时,侵彻体成型效果较好。

In order to further improve the explosively formed projectile (EFP) penetration depth and penetration aftereffect, the liner applies threelayer eccentric sub hemisphere structure The penetrator forming process of shaped charge warhead with threelayer eccentric sub hemisphere structure was simulated by using ANSYS/LS-DYNA software The influence factors on the molding such as curvature radius, wall thickness, material and so on are analyzed. The results show that the threelayer liner structure can be used to form the EFP tandem warhead with the forward and after parts separated. When the liner material is copper, the radius of curvature and the charge diameter ratio is 0.9, the total liner wall thickness is 6mm, wall thickness ratio for three-layer liner is 1:3:2 the penetrator forming effect is good.