优化设计次口径球缺罩成形装药结构

运用ANSYS/LS-DYNA仿真软件,进行了次口径球缺罩的成形装药结构参数对侵彻体形成的影响规律的数值模拟研究.采用端面环形起爆方式,优化设计次口径球缺罩的成形装药结构,找出形成最佳杆式EFP的次口径球缺罩的圆弧曲率半径、药型罩壁厚及成形装药高度的最优值;当内圆弧半径为40mm、壁厚为1.8mm、装药高度为45mm时,仿真得到了成形形态和成形参数都较佳的杆式EFP,其头部速度达到2 532m/s,长径比为3.2.同时,得到了杆式EFP成形参数速度和长径比等随次口径球缺罩的圆弧曲率半径、药型罩壁厚和成形装药高度的变化规律曲线,为今后优化设计EFP战斗部提供参考依据.

Optimum Design of the Shaped Charge Configuration of Subcaliber Hemispherical Liner

By ANSYS/LS-DYNA software,the effect law of penetrator formation with configuration parameters of shaped charge of subcaliber hemispherical liner was simulated numerically. Annulus initiation was used,the configuration of shaped charge of subcaliber hemispherical liner was optimized and designed,optimization combination of the arc curvature radius and thickness of hemispherical liner,the height of shaped charge,which influence on the formation of long-rod of EFP,was derived. When the inner arc curvature radius was 40mm,thickness of hemispherical liner was 1.8mm,and the height of shaped charge was 45mm,the forming long-rod of EFP with better formation configuration and parameters was found,the head speed of which arrived 2 532m/s,the ratio of length to diameter of which was 3.2.The change law curves of the arc curvature radius and thickness of hemispherical liner,the height of shaped charge with the formation of long-rod of EFP was obtained,which provide reference for the more design of EFP warhead.