新型球锥药型罩的数值仿真及试验分析

Numerical Simulation and Experimental Analysis of New Spherical Cone Liner

为了研究不同结构和壁厚对球锥形药型罩静破甲深度与穿孔孔径的影响,采用数值仿真软件对不同结构和壁厚的球锥药型罩进行建模与计算,结合射流形态、射流头部速度、穿孔孔径和穿孔深度,分析药型罩壁厚和底部开闭孔对其侵彻性能的影响。结果表明,壁厚1.0 mm底部开孔的球锥药型罩侵彻深度最大,壁厚1.2 mm底部闭孔的球锥药型罩穿孔孔径最大。地面模拟装枪穿钢靶测试结果证实,数值模拟计算结果与试验结果吻合较好,研究成果可为大孔径石油射孔弹设计提供参考。

In order to study the influence of different structure and thickness on static penetration depth and perforation diameter of spherical cone liner, the numerical simulation software was used to model and calculate the penetration of different structure and thickness. According to the numerical simulation results of jet shape, jet tip velocity, perforation diameter and perforation depth, the influences of the liner thickness and the opening hole or closing hole at the bottom on its penetration performance were analyzed. The results show that the penetration depth of spherical cone liner with thickness of 1.0 mm and bottom opening is the largest, the perforation diameter of spherical cone liner with thickness of 1.2 mm and bottom closed hole is the largest. The numerical simulation results are in good agreement with the test results of the ground simulation gun penetrating steel target. The research results can also provide reference for the design of big hole shaped charge.