The formation and influence of initiation manners on a linear-shaped charge (LSC) jet were studied through experimentation and numerical simulation. An X-ray was adopted to observe the formation process of LSC jet, and simultaneous axial stretch and edge expansion were observed in the formation. The cause of the end effect, and the influence of single end point initiation, central point initiation, two end point initiation, and time difference were discussed. Numerical simulation indicated that the end effect was caused by a combination of jet expansion in the edge direction and the “erosion” of end rarefaction waves, which could be eliminated by increasing the charge length. The jet initiated via single-point initiation produced the highest expansion velocity at the detonation termination end, and the jet initiated in two-point initiation produced the highest jet tip velocity. The initial spherical wave of central-point initiation had the effect of energy accumulation similar to conical charge, and the central jet exhibited high jet tip velocity. Central-point initiation is the most powerful in terms of general penetration ability. The penetration performance of the jet with time difference initially decreased and then increased with increasing Δt and when the general deflection was the smallest, the crack was the most symmetric.

通过实验和数值模拟研究了引发方式对线形电荷射流的形成和影响。用X射线观察LSC射流的形成过程，同时观察到轴向拉伸和边缘扩展。讨论了产生末端效应的原因，以及单个端点引发，中心点引发，两个端点引发和时间差的影响。数值模拟表明，末端效应是由边缘方向的射流膨胀和末端稀疏波的“侵蚀”共同造成的，可以通过增加电荷长度来消除。通过单点引发而产生的射流在爆轰终止端产生了最高的膨胀速度，并且两点引发的喷射产生了最高的喷射尖端速度。中心点引发的初始球形波具有类似于锥形电荷的能量积累效应，并且中心射流表现出较高的射流尖端速度。就一般渗透能力而言，中心点引发是最强大的。射流的穿透性能随时间差而降低，然后随着Δ的增加而增加吨并且当一般偏转最小，裂纹是最对称的。