CAJ | 학술논문

为深入研究被动电磁装甲的防护机理，进行了脉冲电流作用下金属射流受到的箍缩电磁力作用研究。通过频域分析方法得到了脉冲电流在金属射流中的电流密度分布，并结合反趋肤效应现象研究了射流受到的等效表面电磁压强随半径以及电流密度分布的变化规律。通过数值分析表明：脉冲放电的下降沿出现反趋肤效应时，金属射流受到的等效表面电磁压强大于相同电流时出现趋肤效应时的值。通过被动电磁装甲试验验证了脉冲电流产生的箍缩电磁力的作用效果。在注入脉冲电流的情况下，射流在后效靶板上的穿孔直径明显比不加电情况大。上述研究进一步完善了被动电磁装甲对破甲弹的防护机理，对被动电磁装甲的应用具有一定的指导意义。
위심입연구피동전자장갑적방호궤리，진행료맥충전류작용하금속사류수도적고축전자력작용연구。통과빈역분석방법득도료맥충전류재금속사류중적전류밀도분포，병결합반추부효응현상연구료사류수도적등효표면전자압강수반경이급전류밀도분포적변화규률。통과수치분석표명：맥충방전적하강연출현반추부효응시，금속사류수도적등효표면전자압강대우상동전류시출현추부효응시적치。통과피동전자장갑시험험증료맥충전유산생적고축전자력적작용효과。재주입맥충전류적정황하，사류재후효파판상적천공직경명현비불가전정황대。상술연구진일보완선료피동전자장갑대파갑탄적방호궤리，대피동전자장갑적응용구유일정적지도의의。
To further research of the passive electromagnetic armor protection mechanism, pinch electromagnetic force suffers on shaped charge j et penetrated by pulse current was stu-died.Based on the frequency analysis method,the distribution of pulse current density in the shaped charge j et was calculated,and the characteristics of the equivalent surface electromag-netic pressure with j et radius and current density distribution were researched.Numerical simu-lation results show that,as the inverse skin effect occurs at the current trailing edge,the equivalent surface electromagnetic pressure is little than that at the rising edge for the same value of current.The influence of the pinch electromagnetic force on the shaped charge j et by pulse current is verified by a passive electromagnetic armor test.As inj ecting pulse current in the j et,the perforation diameter of the shaped charge j et in the aftereffect target plate is obvious large than that of no current.The above study perfects the protection mechanism of passive electromagnetic armor against shaped charge,and has a guiding significance of passive electromagnetic armor applications.