预制破片与轻质壳体阻抗匹配对破片初速及完整性的影响  

Influence of Impedance Matching between Prefabricated Fragments and Light Shell on Initial Velocity and Completeness of Fragments

作　　者：周涛[1] 沈飞[1] 王辉[1] ZHOU Tao;SHEN Fei;WANG Hui(Xi an Modern Chemistry Research Institute,Xi an 710065,China)

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《高压物理学报》2018年第4期136-141,共6页Chinese Journal of High Pressure Physics

基　　金：国防基础预研项目(00402020202)

摘　　要：依据杀伤战斗部装药对破片爆轰加载过程的特征,设计了与其较为相似的滑移爆轰单元结构实验模型,采用闪光X射线照相方法获得了预制破片和轻质壳体在两种典型排布顺序下的破片初速及破损情况,并结合应力波传播理论对实验结果进行了分析。结果表明:破片外置时,初始应力波由低阻抗金属材料向高阻抗金属材料传播,破片受到壳体传入的冲击波及空气传入的拉伸波作用,初速较高,轻微破损;破片内置时,初始应力波由高阻抗金属材料向低阻抗金属材料传播,虽然破片受到爆轰产物传入的冲击波及壳体反射的拉伸波作用,但初速相对偏低,易发生破损,甚至有明显层裂现象。According to the characteristics of the detonation loading process in prefabricated fragment warhead,we designed the sliding detonation unit test model,and obtained the initial velocity and the damage of the prefabricated fragments and light shell under two typical arrangements by the X-ray photographic method,and analyzed the influence of different impedance matching structures on the accelerating character at the same time.The results show that the initial velocity of the prefabricated fragments situated outside the shell （sequential impedance matching structure） with slight damage is relatively high,whereas that of the prefabricated fragments situated inside the shell （reverse impedance matching structure） with stratification cracks is relatively low.

关 键 词：杀伤战斗部 预制破片 轻质壳体 初速 X射线摄影 

分 类 号：O389[理学—流体力学] TJ760.2[理学—力学]