复合聚能装药威力性能的数值模拟研究

为了提高聚能杆式射流飞行稳定性和破甲威力性能的要求，采用LS-DYNA软件对变壁厚复合杆式射流成型过程进行数值模拟，研究了外罩在不同变壁厚条件下对杆式射流侵彻靶板威力性能的影响.研究结果表明：与外层罩在等壁厚条件下的复合球缺罩相比，当外罩采用顶薄边缘厚的结构时，杆式射流破甲威力提高10%左右；当外罩采用顶厚边缘薄的结构时，杆式射流破甲威力基本保持不变，但射流速度梯度明显降低，进而大炸高条件下稳定性提高，在战斗部采用不同外罩变壁厚结构时，可有效提高杆式射流破甲威力及射流稳定性.

Numerical Simulation on Armor Penetration of Double-layer Shaped Charge

In order to increase the stability and armor penetration of shaped charge jets,numerical simulation and the effect of varying thickness on armor penetration is analyzed by using LS-DYNA software. Results show that the armor penetration of the shaped charge with the outer shaped charge with thick edge and thin top increased 10% than the shaped charge with equal thickness. The armor penetration of the shaped charge with the outer shaped charge with thick top and thin edge is basically unchanged,but the jets velocity gradient decreased obviously and the stability of shaped charge jets increased with higher explode height. The warhead with the outer shaped charge with different thickness increased the stability and armor penetration of shaped charge jets.