反应装甲变形飞板干扰射流作用过程分析

Deformed Flying-Plate Influence on the Interaction between Jet and ERA

爆炸反应装甲能显著地降低射流的侵彻能力,在以前研究飞板与射流相互作用过程中,通常把飞板当成不变形刚体,而实际上飞板在抛射过程中会发生变形.根据飞板的变形特点,在刚性平板干扰射流模型的基础上,分析飞板变形应用对反应装甲干扰射流影响,建立变形飞板干扰射流模型,得到残余射流的横向速度计算公式,所得数值计算和实验结果相吻合.

ERA has very high protection level against shaped charge jet. The basic physical mechanisms associated with a shaped charge jet penetrating ERA have been described in many previous research works. In previous disturbance models, the fly-plate was regarded as rigid body with no deformation. In accordance with the physical phenomenal of flying-panel deformation in confined-explosive structure, based on the flying-plate deformation characteristics, the disturbance model of rigid flying-plate, and the dynamic model of jet disturbances caused by deformed plate of ERA are set up and the disturbance velocity of residual jet is obtained. Agreement is shown between numerical simulation and experiment results.