罩顶材料对双锥药型罩成型及侵彻性能的影响

Influence of top material on forming and penetration performance of double cone type charge

为提高聚能射流的侵彻性能,提出一种双锥药型罩,通过改变部分罩顶材料,探究其对射流成型及侵彻性能的影响。以钨、钽、镍为罩顶材料,用LS-DYNA软件对不同罩顶材料高度占比下(h/H)钽-铜、钨-铜、镍-铜双锥药型罩和单铜双锥药型罩的射流形成和侵彻钢靶板过程进行数值模拟。结果表明:钨-铜型对头部速度的提升最大,但易断裂,镍-铜型的头部速度最小,钽-铜型成型最好且对侵彻性能的提升最大。当h/H=0.32时,钽-铜结合双锥药型罩形成的射流与单铜双锥罩相比,头部速度提高15%,射流长度增加2.1%,射流侵彻深度提高7.9%,破孔口径提高64%。相比单铜药型罩,双锥药型罩提升大。

In order to improve the penetration performance of the shaped energy jet,a double-cone charge-type cover was proposed. By changing part of the top material of cover,the effect on the jet forming and penetration performance was explored.Tungsten,tantalum,and nickel were used as the cover material,and the LS-DYNA software was used to determine the ratio of the length of cover material(h/H)to tantalum-copper,tungsten-copper,nickel-copper double-cone type cover and copper numerical simulations were carried out on the formation and penetration of the jet into the steel target of the double-cone chargeshaped cover,and the results were compared and analyzed. The results show that the tungsten-copper type has the largest increase in head speed,but is prone to breakage. The nickel-copper type has the lowest head speed,and the tantalum-copper type is the best in molding and has the largest increase in penetration performance. When h/H is 0.32,the jet flow formed by the combination of tantalum-copper and the double-cone shape cover has a 15% increase in head speed and a 2.1% increase in jet length,compared with the copper double-cone cover. The jet penetration depth increases by 7.9%,and the hole diameter increases by 64%. Compared with the single-copper double-cone medicine-shaped cover,the lift is the largest.