聚能杆式射流侵彻混凝土和岩石靶体试验与数值模拟  

Experimental and Numerical Simulation of Shaped Charge Jet Penetrating Concrete and Rock Targets

作　　者：张朝平 张先锋[1] 谈梦婷 侯先苇 熊玮[1] 刘闯[1] 顾晓辉[1] ZHANG Chao-ping;ZHANG Xian-feng;TAN Meng-ting;HOU Xian-wei;XIONG Wei;LIU Chuang;GU Xiao-hui(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》2023年第8期773-785,共13页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金资助(12141202,12002170)。

摘　　要：为研究聚能杆式射流成型及其对混凝土和岩石靶体的侵彻破坏特性,分别开展了大隔板聚能装药射流成型X光试验及侵彻混凝土和岩石靶试验。同时,利用ANSYS/AUTODYN有限元软件,针对大隔板聚能装药爆轰波演化过程、杆式射流成型及侵彻混凝土和岩石过程进行了数值模拟,结合试验结果分析了聚能杆式射流对混凝土和岩石靶体的侵彻毁伤特性。研究结果表明:大隔板聚能装药炸药采用Lee-Tarver状态方程能够较为准确的描述爆轰波的传播过程,射流参数(侵彻体长度、射流长度、射流头部速度和射流直径)与试验相比最大误差为12.8%。大隔板聚能装药起爆后可形成大长径比的杆式射流,侵彻后的混凝土和岩石靶中均有明显的开坑区,但侵彻混凝土过程中扩孔作用不明显。其中,侵彻试验中混凝土靶形成的侵彻深度和侵彻孔径相较于岩石靶分别提高了46.7%和48.1%,而岩石靶表面破坏程度和开坑区域均大于混凝土靶。与混凝土靶相比,由于射流侵彻岩石靶过程中裂纹的不断扩展,形成的裂纹长度和宽度均大于混凝土靶,因此靶体损伤范围较大,内部破坏严重。To study the jet formation and failure characteristics of penetrating concrete and rock targets of shaped charge with large barrier,the jet formation by using X-ray cinematography and static armor-piercing into concrete and rock targets were car-ried out.Meanwhile,the evolution process of detonation wave,the rod jet formation of shaped charge with large barrier and penetration process of concrete and rock targets are simulated by ANSYS/AUTODYN software.Combined with the experimental results,the penetration damage characteristics of the shaped charge rod jet to concrete and rock targets were analyzed.Results show that the Lee-Tarver equation of state can accurately describe the propagation process of the internal detonation wave,and the maximum error of forming jet parameters(projectile length,jet length,jet head velocity and jet diameter)is 12.8%com-pared with the test.The continuous rod-like jet with large aspect ratio can be formed after detonation of the shaped charge with large barrier.There are obvious craters in the penetrated concrete and rock targets,and the jet has no obvious reaming effect dur-ing the penetrating concrete process.The penetration depth and hole diameter of the penetrated concrete target are 46.7%and 48.1%larger than those of rock target in the test.However,the surface of the rock target is seriously damaged and the crater area is larger.Compared with the concrete target,cracks in rock target are continuously generated and developed significantly in the process of jet penetrating and the length and width of cracks formed are larger than those of concrete targets.The damage range around the rock target penetration channel is larger,and the internal damage of the target is serious.

关 键 词：大隔板 聚能装药 混凝土靶 岩石靶 损伤破坏 

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]