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为研究钼在串联战斗部前级的应用,运用ANSYS/LS-DYNA有限元分析软件,采用多物质ALE流固耦合算法,对偏心亚半球钼罩不同起爆方式、罩高、壁厚和曲率半径下杆式射流的成型进行数值模拟,并对计算结果进行分析,最后通过与锥形钼罩和偏心亚半球铜罩形成射流性能对比得出结论。结果表明:钼在相同结构条件下成型射流形态以及特征参数性能均优于铜;对比锥形钼罩,偏心亚半球形装药结构所形成杆式射流长度、速度、直径以及药型罩利用率均大于锥形钼罩;最后优化得到金属钼在此装药结构下,选择带隔板点起爆、罩高为45 mm、壁厚为1.5 mm、曲率半径为140 mm时形成最佳杆式侵彻体。
In order to study the application of molybdenum in the front of tandem warhead, ANSYS / LS-DYNA finite element analysis software and multi-substance ALE fluid-solid coupling algorithm were used to study the influence of different initiation modes, hood height, wall thickness and radius of curvature The shape of lower rod jet is numerically simulated, and the calculation results are analyzed. Finally, the conclusion is drawn by comparing the jet performance with that of conical Molybdenum cover and eccentric sub-hemisphere copper cover. The results show that the morphologies and characteristic parameters of molybdenum are better than those of copper under the same structural conditions. The length, velocity, diameter and utilization rate of the rod-shaped jet formed by the conical molybdenum cap and eccentric sub-hemispherical charge structure Are larger than the tapered molybdenum cover; the final optimization of the metal molybdenum in this charge structure, the choice of separator with a point of detonation, cover height of 45 mm, wall thickness of 1.5 mm, the radius of curvature of 140 mm form the best rod invasion Thoroughly.