截顶组合式环形装药结构设计与优化

Structural design and optimization of truncated composite annular charge

为提升环形聚能射流的侵彻深度,参考超聚能射流原理设计了一种截顶组合式环形聚能装药结构。用有限元仿真软件Autodyn分别对组合式药型罩及锥形罩的环形射流成型过程进行数值模拟。结果表明:相较于锥形罩形成的射流,组合式药型罩环形射流的头部速度更快,且药型罩利用率更高。用正交优化方法对装药结构参数进行优化得出,主药型罩壁厚为8 mm、辅助药型罩壁厚为6 mm、药型罩截顶比例为0.1、主药型罩锥角为70°时射流侵彻能力最佳。优化后的截顶组合式环形药型罩形成的射流侵彻深度相比于锥形罩提升了7.39%。

In order to improve the penetration depth of annular shaped charge jet,a truncated composite annular shaped charge structure was designed based on the principle of super hyper charge jet.The finite element simulation software Autodyn was used to simulate the annular jet forming process of composite liner and conical liner.The results show that compared with the jet formed by conical liner,the annular jet of composite liner has a faster head velocity and higher liner utilization.The orthogonal optimization method was used to optimize the structural parameters of the charge.The results show that the jet penetration ability is the best when the wall thickness of the main liner is 8 mm,the wall thickness of the auxiliary liner is 6 mm,the cut-off ratio of the liner is 0.1,and the cone angle of the main liner is 70°.The penetration depth of the jet formed by the optimized truncated composite annular liner is 7.39%higher than that of the conical liner.