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运用LS-DYNA仿真软件研究了弧锥结合罩的结构参数对双模毁伤元EFP和JPC形成的影响规律。通过改变弧锥结合罩的锥角、圆弧曲率半径和药型罩壁厚,对比分析形成的毁伤元性能规律,得出药型罩结构参数对EFP和JPC长度、长径比、速度等成型参数的影响规律。结果表明:弧锥结合罩的圆弧曲率半径、锥角和壁厚存在最优值,锥角在140～150°、圆弧曲率半径在40～50mm、药型罩厚度在3.6～4.0mm范围内取值较好。该数值模拟结果可为进一步研究双模成型装药提供参考依据。
Using LS-DYNA simulation software, the influence of structure parameters of arc cone joint cover on the formation of dual-mode damage elements EFP and JPC was studied. By changing the taper angle, the radius of curvature of the arc and the wall thickness of the medicine cover, the performance rules of the damage element were analyzed comparatively, and the parameters of the structure of the medicine cover such as the length, the aspect ratio and the speed of EFP and JPC The influence law of the parameter. The results show that the radius of curvature, the cone angle and the wall thickness of the arc cone joint cover have the best values. The cone angle is 140-150 °, the radius of curvature of the arc is 40-50 mm, the thickness of the medicine cover is in the range of 3.6-4.0 mm Within the better value. The numerical simulation results provide a reference for further research on dual-mode forming charge.