CAJ | 학술논문

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。
운용충격파이론，대횡향효응증강형탄환（Penetration with Enhanced Lateral Efficiency，PELE）침천금속파판적궤리진행료분석，장 PELE 침철과정중능량손실분위외각화내심당격파판구역배형새괴획득적능량，충격파영향범위내외각화내심증가적내능，외각전단외연화내연대파판충새전절모능등，급출료학정저사능량적계산방법；병의거능량수항원리，급출료 PELE 정당금속박파판파후잉여속도적근사계산공식。공식계산결과여다충조건하실험결과균문합교호。분석계산소득각능량손실결과표명，탄체내심재료적변화대탄체침철능력적영향교소；침철중파판새괴획득적능량재탄체침철동능손실중비중최대；외각전단내연대파판적전절능모대탄체동능손실적영향가이홀략。
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 front 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.