爆炸反应装甲对爆炸成型弹丸侵彻效应影响的实验研究

为揭示三明治结构爆炸反应装甲（ERA）对爆炸成型弹丸（EFP）侵彻效应的影响，开展了铜质杆式EFP对披挂典型斜置角ERA主靶板的侵彻效应实验。采用脉冲X光摄影方法拍摄了EFP与ERA相互作用的图像，并获得了EFP对主靶板的剩余侵彻深度（RDOP）。实验结果表明，EFP对披挂ERA主靶板的RDOP随着ERA斜置角的增大而呈非线性下降，相对无ERA时的侵彻深度下降百分比呈指数增长的变化趋势。ERA炸药层厚度为0.027D（D为装药口径）时，当斜置角为0°和30°时，EFP的RDOP和相对侵彻深度下降百分比变化较小；当斜置角从30°增大到60°时，EFP的RDOP从0.50D减小至0.19D，相对侵彻深度下降百分比则从41%迅速增大到77%. 随着ERA炸药层厚度的增大，EFP的RDOP减小、相对侵彻深度下降百分比增大。其中, ERA炸药层厚度为0.027D时的相对侵彻深度下降百分比比ERA炸药层厚度为0.018D时平均增大8%.

Experimental Research on the Influence of ERA on Penetration Efficiency of EFP

The experiment of stretched rod copper explosion formed projectile (EFP) formed by the shaped charge penetrating into main target add-on typical explosive reactive armor（ERA）with different oblique angle were conducted to reveal the effect of sandwich ERA on penetration efficiency of EFP. The pulsed X-ray photographs of the interaction between ERA and EFP were obtained by flash X-ray experiment, together with residual depth of penetration (RDOP) of residual EFP. The results show that RDOP has a nonlinear decreasing tendency as oblique angle raises. The drop of penetration depth of EFP passing through ERA exponentially increases with ERA oblique angle. When the oblique angles of ERA are 0° and 30°, RDOP and drop of penetration depth keep stabile. But when it grows from 30° to 60°, RDOP declines from 0.50 D to 0.19 D, and the drop of penetration depth grows rapidly from 41% to 77%. On the other hand, the increment of layer thickness results in a heavier reduction in RDOP and the increase in the drop of penetration depth. ERA with 0.027 D layer thickness makes the drop of penetration depth higher 8% on average than it with 0.018 D. The reason for RDOP reduction is analyzed for researching the mechanism of action of EFP and ERA.