聚能射流侵彻有限厚钢靶后效参数的特性  

Characteristics of After⁃effect Parameters of Shaped Charge Jet Penetrating Finite Thickness Steel Target

作　　者：方一舟 张先锋[1] 熊玮[1] 刘闯[1] 谈梦婷 FANG Yi-zhou;ZHANG Xian-feng;XIONG Wei;LIU Chuang;TAN Meng-ting(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,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：《含能材料》2024年第9期899-910,共12页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金(12141202,12002170)。

摘　　要：为研究聚能射流对有限厚钢靶的侵彻后效参数特性,开展了小口径聚能装药射流成型及侵彻带有靶后效应物的有限厚靶板实验,利用ANSYS/LS⁃DYNA有限元软件进行了聚能射流侵彻有限厚靶板作用过程数值模拟计算,分析了靶板厚度、炸高及靶后效应物密度对聚能射流侵彻后效参数的影响,包括剩余射流头部直径d、头部速度v及后效引爆炸药能力参数v^(2)d。研究结果表明:随着靶厚的增加,后效引爆威力v^(2)d呈现线性衰减趋势,厚度每增加20 mm约损失初始引爆威力参数的16%;在聚能射流保持连续的炸高范围内,随着炸高的增加,后效引爆威力参数v^(2)d呈现先增大后减小的趋势,其驻点出现于炸高为8倍聚能装药口径处;在常见的炸药密度范围内,随着靶后效应物密度ρ的增大,引爆威力参数v^(2)d衰减速率呈现先减小后增大的趋势;在相同时刻下,v^(2)d⁃ρ曲线存在一个驻点,v^(2)d最大值分布于ρ=1.6~1.8 g·cm^(-3),且驻点位置随侵彻时间增大而右移。To study the characteristics of after⁃effect parameters of shaped charge jet penetrating finite thickness steel target,the experiments on small shaped charge jet formation and penetration on finite thickness plate with after⁃effect target were carried out.The numerical simulation on the process of shaped charge jet penetrating finite thickness target plate was carried out by AN⁃SYS/LS⁃DYNA finite software.The influence of target plate thickness,standoff and after⁃effect material density on the after⁃effect parameters of shaped charge jet penetration was analyzed,including the residual jet tip diameter d,tip velocity v and after⁃effect initiation ability v^(2)d.The results show that with the increase of target thickness,the after⁃effect initiation ability v^(2)d shows a lin⁃ear attenuation trend,and around 16%of the initial initiation parameter is lost for every 20 mm increase in thickness.In the range of standoff that the jet keeps continuous,with the increase of standoff,the after⁃effect initiation ability v^(2)d first increases and then decreases,and its stagnation point appears at the standoff of 8 times the shaped charge diameter.In the range of com⁃mon explosive density,with the increase of after⁃effect material densityρ,the attenuation rate of after⁃effect initiation ability v^(2)d first decreases and then increases.At the same time,there is a stagnation point in the v^(2)d⁃ρcurve.The peak value of v^(2)d is dis⁃tributed betweenρ=1.6-1.8 g·cm^(-3),and the stagnation point position moves to the right with the increase of penetration time.

关 键 词：聚能射流 有限厚靶板 冲击引爆 靶后引爆威力 靶后效应物 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O385[理学—流体力学]