双模成型装药战斗部药型罩结构的正交设计

Orthogonal Design of the Liner Structure in Dual-Mode Charge Warhead

针对双模战斗部小型化设计及其应用问题,利用LS-DYNA仿真软件,研究了双模战斗部药型罩结构参数(药型罩锥角、药型罩壁厚)对双模毁伤元成型性能的影响规律,揭示了各结构参数对双模毁伤元成型性能的控制规律:随着药型罩锥角和壁厚的增大,双模毁伤元的头部速度下降明显。结合正交设计方法,确定了药型罩壁厚是决定两毁伤元头部速度差的主要因素,锥角是决定各毁伤元头部速度的主要因素。得到了双模毁伤元成型性能均较佳的药型罩结构参数组合:药型罩锥角为80°,药型罩上端壁厚为5.0 mm,药型罩下端壁厚为4.0 mm,药型罩倒角弧度半径为10.0 mm。为验证模拟结果,进行了X射线成像试验,数值模拟结果与试验结果吻合较好。研究结果可为双模战斗部的进一步优化设计提供参考依据。

The influence of structural parameters(liner cone and thickness)of dual-mode warhead on the forming performance of dual-mode damage element is studied by LS-DYNA for the miniaturization design and application of dual-mode warhead,and the results reveal that the head speed of dual-mode damage element obviously decreases with the increase of liner cone and thickness.By the orthogonal design method,it is found that the thickness of the liner is the main factor to determine the head velocity difference between the two damage elements,and the liner cone is the main factor to determine the head velocity of each damage element.The structural parameters combination of the liner is obtained as following,whose forming performance of the dual-mode damage element is better.The liner cone is 80°,the thickness of the upper end of the liner is 5.0 mm,the thickness of the lower end of the liner is 4.0 mm,and the liner radian radius is 10.0 mm.X-ray imaging tests were done,whose results show a quantitatively good agreement between numerical simulation and tests.The research results provide a reference for the further optimization design of the dual-mode warhead.