炸药材料特性对整体式MEFP成形的影响

为提高整体式多爆炸成形弹丸（MEFP）毁伤能力，采用LS-DYNA数值仿真软件对不同炸药材料下整体式MEFP成形过程进行了仿真研究，并对采用B炸药的战斗部进行了地面静爆验证试验，试验结果和仿真结果吻合较好.研究表明随着炸药材料密度、爆速和爆压的增加，中心弹丸速度和长径比都得到大幅提高，中心弹丸侵彻能力增强；周边弹丸外形则由球形逐渐向长杆形发展，弹丸气动性减弱.炸药材料参数与毁伤元成形参数间呈抛物线变化规律，故可根据具体目标选择合适的炸药材料，以提高对目标的毁伤概率.

Effect of Material Characteristics of Charge on Formation of Integral Multiple Explosively Formed Projectiles

To improve the damage ability of integral multiple explosively formed projectiles(MEFP), the formation process of integral MEFP formation with different materials of charge was studied using LS-DYNA code,and the feasibility of the warhead with B explosive is verified in static blast experiment. The simulated results coincide well with the experimented data. The results indicate that with the increase of density, detonation velocity, pressure of charge, and the velocity and length-diameter ratio of the central projectile increases significantly and the penetration performance enhances. The shape of surrounding projectile changes from ball to rod gradually,and the flight stability of projectile decreases. Therefore, selecting suitable explosive charge could improve the damage effect based on particular aim.