横向效应增强型弹垂直侵彻薄靶的轴向剩余速度理论分析  

Theoretical analysis of axial residual velocity of penetration with enhanced lateral efficiency pill vertical penetrating thin target

作　　者：丁亮亮 汤文辉[1] 冉宪文[1] 樊自建 肖凡[3] DING Liangliang;TANG Wenhui;RAN Xianwen;FAN Zijian;XIAO Fan(College of Liberal Arts and Sciences,National University of Defense Technology,Changsha 410073,China;College of Aeronautics and Astronautics,National University of Defense Technology,Changsha 410073,China;The PLA Unit 671267,Beijing 101104,China)

机构地区：[1]国防科技大学文理学院 [2]国防科技大学空天科学学院 [3]中国人民解放军671267部队

出　　处：《国防科技大学学报》2019年第2期57-62,共6页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(11072262;11002162)

摘　　要：为了得到横向效应增强型弹(Penetration with Enhanced Lateral Efficiency projectile,PELE)对金属薄靶垂直侵彻后的弹体轴向剩余速度,运用平面冲击波理论,对PELE的侵彻机理进行分析。参照平头弹体对靶板的侵彻模型,将PELE侵彻过程中的能量损失划分为以下几个部分:外壳体和内芯撞靶区域对应的环形塞块获得的能量、冲击波作用下弹体的内能增量以及剪切耗能等。然后根据能量守恒原理,得到PELE垂直侵彻金属薄靶后的PELE弹体轴向剩余速度的理论模型。为了验证该模型的合理性和准确性,设计相应的试验进行验证。结果表明,不同条件下得到的试验结果和理论模型得到的计算结果均吻合得较好。因此,得到的PELE垂直侵彻薄靶的轴向剩余速度理论模型可为工程应用提供指导和参考。In order to obtain the theoretical model of the axial residual velocity of PELE (penetration with enhanced lateral efficiency projectile) under the condition of vertical penetration,the plane shock wave theory was used to analyze the mechanism of PELE vertical penetrating metal thin target. According to the penetration model of the flat head projectile,the energy loss during the penetration of PELE was divided into the following parts: the energy obtained by the annular plug block corresponded to the outer shell and the inner core,the increased internal energy of the outer casing and inner core,the shear energy dissipated in the outer casing. Based on the principle of energy conservation,the theoretical model of axial residual velocity after PELE vertical penetrating thin metal targets was obtained. To verify the rationality and accuracy of the theoretical model,the corresponding experiments were designed to verify the results. The results show that the calculated results coincide well with the experimental results under different conditions. Therefore,the theoretical model of axial residual velocity of PELE vertical penetrating thin target can provide guidance and reference for engineering application.

关 键 词：横向效应增强型弹 垂直侵彻 轴向剩余速度 平面冲击波理论 

分 类 号：O383[理学—流体力学]