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任何一块主动装甲的基本单元都是由夹在二块金属板之间的层状炸药所构成。当射流倾斜地撞击在主动装甲的基本单元上时,使炸药起爆,造成射流与加速板之间的横向相互作用,这种作用使射流受到严重干扰,从而降低了射流的后续侵彻效果。本研究旨在找出起干扰射流作用的主要现象。通过试验,发现了射流与板之间存在几种不同的相互作用。头部射流在起爆炸药之后,基本上不受干扰。后续射流由于一种回跳效应与板子发生断续地相互作用,这种效应的频率和幅度是射流和板二者几何形状、运动状态和材料性能的函数。为了解释在上述相互作用的不同阶段所观察到的现象,我们建立了一些简化了的理论模型。其结论与通过闪光X射线照相所获得的试验数据相吻合。
The basic unit of any active armor is made of layered explosives sandwiched between two metal plates. When the jet impinges obliquely on the active armor’s base unit, the explosives are detonated, causing a lateral interaction between the jet and the accelerating plate. This action severely interferes with the jet, reducing the subsequent penetration of the jet. The purpose of this study is to identify the main phenomena that can interfere with the jet. Through experiments, it was found that there are several different interactions between the jet and the plate. The head jet is basically undisturbed after detonating the explosive. Subsequent jets intermittently interact with the plate due to a rebound effect, the frequency and magnitude of which is a function of both the geometry of the jet and the plate, the state of motion, and the properties of the material. In order to explain the observed phenomena at different stages of the above interaction, we have established some simplified theoretical models. The conclusion is consistent with the experimental data obtained by flash radiography.