针对某等壁厚球缺型药型罩结构，采用LS-DYNA 3D软件，开展了杆式射流(jetting projectile charge，JPC)成型和对混凝土侵彻过程的三维数值模拟。基于杆式射流成型和侵彻性能的影响因素分析，采用正交试验法，确定了药型罩壁厚、装药高度和起爆直径3个影响因素，以及射流头尾速度、头尾速度差、射流长度和侵彻深度5个评估指标，分析各影响因素对评估指标的敏感性。结果表明:药型罩壁厚是影响射流头尾速度的主要因素，曲线单调递增；起爆直径对射流尾部速度影响较小，是影响射流头部速度、头尾速度差和射流长度的主要因素，曲线单调递增；装药高度对射流头部和头尾速度差的影响相对最小；射流侵彻能力随各因素水平的提高而单调递增，但增加幅度都逐渐减弱。
Abstract
Aiming at a certain ball-lacking shaped charge liner structure with equal wall thickness, 3D numerical simulation for jetting projectile charge (JPC) forming and concrete-penetrating process was performed by using the software LS-DYNA 3D.Based on the analysis of influencing factors of rod jet forming and penetration performance, 3 influencing factors of shaped charge liner wall thickness, charge height and initiation diameter, and 5 evaluation indexes of jet head and tail velocities, head and tail velocity difference, jet length and penetration depth were determined using the orthogonal test method, and the sensitivity of each influencing factor to evaluation indexes was analyzed.The results showed that the shaped charge liner wall thickness is the main factor affecting jet head and tail velocities, the relation curve increases monotonously; its initiation diameter has a smaller effect on jet tail velocity, it is the main factor affecting jet head velocity, head and tail velocity difference and jet length, the relation curve increases monotonously; the charge height has the least effect on jet head and tail velocity difference; the jet penetration ability increases monotonously with increase in each factor level, but its increase gradually weakens.
关键词
正交试验法 /
球缺型药型罩 /
杆式射流(JPC) /
数值模拟
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Key words
orthogonal test method /
ball-lacking shaped charge liner /
jetting projectile charge (JPC) /
numerical simulation
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