PELE正侵穿金属薄靶轴向剩余速度近似计算与分析  

Approximate calculation on the axial residual velocity of the PELE penetrate thin metal target plate

作　　者：樊自建[1,2] 冉宪文[2] 汤文辉[2] 于国栋 李泽斌[2] 陈为科 

机构地区：[1]国防科技大学指挥军官基础教育学院,湖南长沙410072 [2]国防科技大学理学院,湖南长沙410073 [3]国营806厂,广东佛山528231

出　　处：《国防科技大学学报》2015年第5期84-90,共7页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(11002162)

摘　　要：运用冲击波理论,对横向效应增强型弹丸(Penetration with Enhanced Lateral Efficiency,PELE)侵穿金属靶板的机理进行了分析,将PELE侵彻过程中能量损失分为外壳和内芯撞击靶板区域环形塞块获得的能量,冲击波影响范围内外壳和内芯增加的内能,外壳前端外沿和内沿对靶板冲塞剪切耗能等,给出了确定这些能量的计算方法;并依据能量守恒原理,给出了PELE正撞金属薄靶板靶后剩余速度的近似计算公式。公式计算结果与多种条件下实验结果均吻合较好。分析计算所得各能量损失结果表明,弹体内芯材料的变化对弹体侵彻能力的影响较小;侵彻中靶板塞块获得的能量在弹体侵彻动能损失中比重最大;外壳前端内沿对靶板的剪切能耗对弹体动能损失的影响可以忽略。By using the shock wave theory, the process that PELE （ Penetrator with Enhanced Lateral Efficiency） penetrated a thin metal target was analyzed. The energy loss of the PELE in the process of penetrating the target plate could be divided into the energy obtained by plug when jacket and filling impacted the target, the increased internal energy of jacket and filling, and the shear energy dissipated in the outer and inner edge on the fi^ont end of jacket in the process of penetrating the target, etc. Based on the principle of conservation of energy and the method to determine these energies, the approximate formula of the axial residual velocity of PELE was presented. Results show that the axial residual velocity, and the calculated results are in good agreement with the experimental data. Compared with the energy loss in different conditions, the filling material has little effect on projectile penetrating ability, and the energy that the plug obtained is the largest while the shear dissipated energy can be neglected.

关 键 词：横向效应增强 穿甲 冲击波理论 金属薄板 

分 类 号：O383[理学—流体力学]