不同着角下爆炸成形弹丸对坦克发动机等效靶的毁伤效应  

The Damage Effect of the Equivalent Target of the Tank Engine Under EFP Oblique Penetration

作　　者：柯源 刘彦[1] 黄风雷[1] KE Yuan;LIU Yan;HUANG Fenglei(State Key Laboratory of Explosive Science and Technology,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《北京理工大学学报》2021年第2期130-136,共7页Transactions of Beijing Institute of Technology

基　　金：国家部委基金资助项目(6141B010245).

摘　　要：针对坦克发动机在爆炸成形弹丸(EFP)作用下的毁伤效应问题,对典型坦克发动机及其防护结构进行了结构等效设计,开展了不同着角下EFP对发动机等效靶的侵彻实验,并结合LS-DYNA软件分析了不同着角下EFP对防护板(钢质)的侵彻作用,获得了发动机等效靶的破孔尺寸、毁伤面积以及EFP穿靶后的剩余动能.研究结果表明:随着角的增大,钢靶的破坏面积增大,对发动机结构(铝箱)毁伤效果呈现减弱趋势;实验结果与仿真结果基本一致,验证了仿真的有效性;EFP对钢靶最大破坏尺寸随着角增大呈上升趋势,EFP贯穿钢靶后的剩余动能随着角增大呈下降趋势;当着角α≥57°时,爆炸成形弹丸不能穿透钢靶,无法对铝箱造成毁伤.Aiming at damage effect of the tank engine under the action of explosive formed projectile(EFP),structural equivalent design of a typical tank engine and its protective structure,and the penetration experiments of EFP at different penetration angles on the equivalent target of the engine were carried out.Combined with LS-DYNA software,the penetration effect of EFP on the protective plate(steel)at different EFP penetration angles was analyzed.Not only the hole size and damage area of the equivalent target of the engine were obtained,but the remaining kinetic energy after the EFP passed through the target was also obtained.Research indicates that with the increase of the EFP penetration angles,the damage area formed on the steel target increases,and the damage effect of the projectile on the aluminum box is weakened.The experimental results are basically consistent with the simulation results,verifying the effectiveness of the simulation.The maximum failure size of the EFP to the steel target shows an upward trend with the increase of the penetration angle.The residual kinetic energy of the EFP through the steel target decreases with the increase of the penetration angle.When the penetration angle isα≥57°,the EFP cannot penetrate the steel target and cannot cause damage to the aluminum box.

关 键 词：爆炸成形弹丸 着角 坦克发动机 等效靶 毁伤 

分 类 号：O385[理学—流体力学]