【摘要】 为研究活性爆炸成型弹丸（Explosively Formed Projectile, EFP）对装甲目标时序侵爆联合毁伤效应，开展了基于PTFE/Al（质量比73.5%/26.5%）活性球缺罩的聚能装药作用密闭多层靶静爆实验。实验结果表明：在装药直径为50 mm时，活性EFP可在10 mm厚前置钢靶上形成约0.6倍装药直径的侵彻孔，并对后效铝靶造成爆裂毁伤，同时在13 L密闭空间中产生1.51 MPa的靶后超压峰值。结合数值仿真，确定活性材料反应弛豫时间τ=72.5μs,并建立SPH-FEM耦合侵爆分段计算模型，系统分析了活性球缺罩内曲率半径（R₂）、外曲率半径（R₁）及罩厚度（h）等几何参数对侵爆联合毁伤效应的影响规律。研究结果表明：活性EFP通过动能侵彻与化学能释放联合作用，可显著增强对多层靶毁伤效应。具体而言，外曲率半径R₁是影响后效铝靶穿孔分布密集度的关键参数；内曲率半径R₂在45～60 mm范围内增大时，虽可提升对前置钢靶的扩孔效应，但会导致后效铝靶毁伤直径呈现递减趋势；随着罩厚度h由3.0 mm增加至6.0 mm,后效铝靶毁伤直径表现出先增大后减小的非线性变化规律，并在h=4.0 mm时毁伤效应最为显著。更多还原

【Abstract】 The sequential penetration-blast damage effects of reactive explosively formed projectiles（EFP） on armored targets are investigate.The static detonation experiment is conducted on the multilayer targets subjected to shaped charges with PTFE/Al（mass ratio of 73.5%/26.5%） reactive spherical-segment liners.The results indicate that the reactive EFP formed a penetration hole with a diameter of approximately 0.6 times the charge diameter in a 10 mm-thick front steel target at a charge diameter of 50 mm, caused severe blast-induced damage to the behind aluminum target, and generated a peak overpressure of 1.51 MPa within a confined volume of 13 L.Furthermore, the reaction relaxation time of the reactive material was determined to be τ=72.5 μs based on numerical simulations.A segmented SPH-FEM computational model for penetration-blast coupling is established, enabling systematic analysis of the influence of key geometric parameters of the reactive spherical-segment liner—including the inner curvature radius（R₂）, outer curvature radius（R₁）, and thickness（h）—on the penetration-blast coupled damage effect.The results demonstrate that the synergistic interaction between kinetic energy penetration and chemical energy release significantly enhances the damage effect of reactive EFPs on multilayer targets.Specifically, the outer curvature radius（R₁） is a critical parameter affecting the density of perforation distribution in the behind aluminum target.The increase in the inner curvature radius（R₂） within the range of 45-60 mm can enhance the hole enlargement effect on the front steel target, but it concurrently leads to a decreasing trend in the damage diameter in the behind aluminum target.As the liner thickness（h） increases from 3.0 mm to 6.0 mm, the damage diameter of the behind aluminum target exhibits a nonlinear variation pattern—increasing first and then decreasing—with the most significant damage effect observed at h=4.0 mm.更多还原