钢包覆式活性破片侵彻双层铝靶的行为特性研究  

Research on Behavior of Steel-coated Reactive Materials Fragment on Penetrating Double-layer Aluminum Plates

作　　者：彭军[1] 李彪彪 袁宝慧[1] 孙兴昀[1] 杨青[1] PENG Jun;LI Biao-biao;YUAN Bao-hui;SUN Xing-yun;YANG Qing(Xi′an Modern Chemistry Research Institute,Xi′an 710065,China)

机构地区：[1]西安近代化学研究所

出　　处：《火炸药学报》2020年第1期90-95,共6页Chinese Journal of Explosives & Propellants

基　　金：总装备部重大专项

摘　　要：为研究包覆式活性破片撞击双层铝靶的毁伤效应和机理,利用14.5 mm弹道枪,开展了同质量、同尺寸的惰性钢破片、钢包覆金属/聚合物型活性破片以不同着靶速度侵彻3 mm+3 mm双层间隔铝靶的实验,分析了活性破片冲击双层间隔铝靶的点火及毁伤机理。结果表明,当破片着速为491~1391 m/s时,两型破片对前靶的穿孔形态和机理相同,为圆孔及冲塞型穿孔,孔直径以及孔直径随着速变化规律也基本相同;当破片着速大于947 m/s时,活性破片对后靶的穿孔开始显著大于前靶,主要是因为两靶间诱发了剧烈化学反应,且破片着速越高,反应越剧烈,后靶的毁伤增强效应越显著,当破片着速为947~1391 m/s时,后靶穿孔面积平均为4.1倍破片截面积,最大为7.2倍;该弹靶条件下活性破片冲击点火阈值速度约为947 m/s。To study the damage effect and mechanism of the coated reactive material fragment impacting on the double-layer aluminum plates,a 14.5 mm ballistic gun was applied for the penetration experiment of steel fragments and steel-coated reactive material fragments with the same mass and size on 3 mm+3 mm double-layer aluminum plates under different impact velocities.The ignition and damage mechanism of the reactive material fragment impacting double-layer aluminum plates was analyzed.The results indicate that at the impact velocity of 491-1391 m/s,it has the same mechanism for the two kinds of fragments.Moreover,the perforation pattern presents circle and punch,and the hole diameter and its change with the impact velocity are also similar.With the impact velocity greater than 947 m/s,the perforation diameter of the rear plate is significantly greater than that of the front plate.It is mainly because intense chemical reaction is released between the plates,the higher the impact velocity,the stronger the chemical reaction,and the significant the damage enhancement effect of the rear target.When the impact velocity is 947—1391 m/s,the average perforation area of the rear target is 4.1 times the cross-sectional area of fragment,and the maximum section area is 7.2 times.The velocity of the reactive fragments impact ignition threshold in this case is 947m/s.

关 键 词：爆炸力学 活性破片 侵彻行为 双层铝靶 点火机理 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O389[理学—流体力学]