为研究聚能装药结构参数对爆炸成型弹丸性能的影响,利用三维动力有限元程序,对爆炸成型弹丸形成过程进行了数值模拟,研究了装药长径比、装药密度、药型罩材料、起爆方式以及壳体厚度对爆炸成型弹丸性能的影响规律。根据研究结果,设计了一种较优化的聚能装药,并进行了聚能装药侵彻混凝土靶板实验。实验结果表明,设计的EFP聚能装药对混凝土靶板有较好的开坑效果,开坑孔径和孔深分别接近装药口径的0.6倍和6.4倍。

The formative process of explosively formed projectile (EFP) was simulated with the three-dimensional finite element code. The influence of parameters of shaped charge including slenderness ratio of explosive, density of explosive, material of shaped charge cover, initiation way and thickness of case on EFP performance was studied, and the relationship between structural parameters of shaped charge and EFP performance was obtained. Furthermore, an optimum shaped charge of EFP was designed according to the results of numerical simulation and experiments of the shaped charge penetrating concrete targets were conduced. The experimental results show that EFP penetrates the concrete targets with a hole of 6.4 and 0.6 times the size of the shaped charge diameter in depth and in diameter, respectively.