环形聚能装药尼龙射流成型及侵彻过程数值模拟研究

Numerical Simulation Study on Performance and Penetration of Nylon Jet by Annular Shaped Charge

为了提高串联战斗部前级射流的开孔孔径,结合环形射流的大孔径毁伤性能和非金属尼龙射流对爆炸反应装甲穿而不爆性能,利用AUTODYN软件对环形尼龙射流的成型和侵彻进行了数值模拟。对聚能装药结构参数设计了正交优化表,发现在0.5倍炸高处,当药型罩壁厚取2 mm,环形起爆半径取15 mm,长径比取1∶2时环形射流的侵彻性能最佳,且在可靠性有75%的分析下,FB大于2.36,即药型罩壁厚对环形射流侵彻靶板口径有显著影响。对爆炸反应装甲的侵彻结果表明,环形尼龙射流可对ERA实现大孔径穿而不爆的目的。

In order to increase the aperture of the front jet of the serial warhead,combining the large-aperture damage performance of the annular jet and the non-metallic nylon jet to the ERA penetration-but-non-detonation,This paper used AUTODYN software to numerically simulate the formation and penetration of annular nylon jet.An orthogonal optimization table is designed for the structure parameters of the shaped charge,and it was found that at 0.5 times the explosion height,when the wall thickness of the liner thickness hood is 2 mm,the peripheral initiation radius hood is 15,and the length-to-diameter ratio is 1∶2,the penetration performance of the annular jet is the best.And under the analysis of 75%reliability,FB is greater than 2.36,that is,the thickness of the liner wall has a significant effect on the diameter of the annular jet penetrating the target screen.The results of the penetration of the explosive reaction armor indicate that the annular nylon jet can achieve the purpose of large-aperture penetration-but-non-detonation for the ERA.