等腰梯形截面聚能装药射流成型及侵彻特性  

Jet Formation and Penetration of Shaped Charge with Isosceles Trapezoidal Cross-section

作　　者：王钰婷 黄正祥[1] 祖旭东[1] 马彬[1] 肖强强[1] 贾鑫[1] WANG Yuting;HUANG Zhengxiang;ZU Xudong;MA Bin;XIAO Qiangqiang;JIA Xin(School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094,Jiangsu,China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《兵工学报》2022年第4期748-757,共10页Acta Armamentarii

基　　金：国家自然科学基金项目(11972196);江苏省自然科学基金项目(BK20190433)。

摘　　要：为研究等腰梯形截面聚能装药射流成型及对靶板的毁伤特性,开展脉冲X光摄影试验以及侵彻深度试验。利用ANSYS/LSDYNA有限元软件对射流成型过程进行数值模拟,研究其余参数不变,装药截面内切圆尺寸变化对射流成型特性的影响。结果表明:等腰梯形截面聚能装药形成的射流具有横向速度,横向速度呈梯度分布;除射流头部外,其余部分在拉伸运动后期出现非凝聚现象,非凝聚的射流由两束横向速度不同、尺寸不同的流体构成;射流横向速度的存在明显降低了射流的侵彻能力;装药截面内切圆直径从56 mm增加至67.2 mm(56 mm的1.2倍)时,射流的非凝聚现象消失,装药截面内切圆直径增加至84 mm(56 mm的1.5倍)时,射流不具备明显的横向速度。The jet formation of shaped charge with isosceles trapezoidal cross-section and its penetration characteristics are studied through pulsed X-ray photography and depth of penetration tests.The jet formation is simulated by using ANSYS/LSDYNA finite element software,and the influence of the inscribed circle size on jet formation is studied when other parameters are fixed.The results show that the shaped charge with isosceles trapezoidal cross-section forms a jet with lateral velocityand the lateral velocity has a gradient distribution.Except for the jet head,the rest of jet is cohesionless at the late stage of stretching. The non-condensed part of jet consists of two fluids with different lateral velocities and different sizes.The penetration ability of jet is reduced due to its lateral velocity.The non-condensation phenomenon of jet disappears when the inscribed circle diameter of charge cross-section increases to 67.2 mm (being 1.2 times of 56 mm),and the jet does not have an obvious lateral velocity when the inscribed circle diameter of charge cross-section increases to 84 mm (being 1.5 times of 56 mm).

关 键 词：聚能装药 射流成型 侵彻 等腰梯形截面 

分 类 号：TJ410.3[兵器科学与技术—火炮、自动武器与弹药工程]