被动电磁装甲对铜射流破坏作用仿真与实验研究  

SIMULATION AND EXPERIMENTAL RESEARCH ON THE DESTRUCTION OF A COPPER JET BY PASSIVE ELECTROMAGNETIC ARMOR

作　　者：齐文达[1] 雷彬[1] 向红军[1] 苑希超[1] 

机构地区：[1]军械工程学院,石家庄050003

出　　处：《工程力学》2015年第10期250-256,共7页Engineering Mechanics

基　　金：国家自然科学基金项目(51307182)

摘　　要：为了实现被动电磁装甲对射流的防护作用,分别对轴向脉冲电流对射流的颈缩、扭曲作用及装甲板对射流产生的横向电磁力作用机理进行了理论分析,考虑脉冲电流趋肤效应和射流为率相关弹塑性模型的前提下,利用ANSYS对这三种作用机理进行了电磁结构耦合仿真,分别得到了电流密度、磁感应强度、电磁力在射流上的分布规律以及射流的最终变形。最后针对三种作用机理分别进行了实验,实验结果证实了被动电磁装甲能够对射流产生破坏作用,在静破甲试验中,当充电电压为5 k V左右,峰值电流为150 k A时,直径为39.2 mm的破甲弹产生的射流侵彻深度降低了8.6%。In order to improve passive electromagnetic armor＇s defenses against shaped charge jets （SCJ）, the necking affection, kinking affection, and transverse electromagnetic force affection are analyzed theoretically and calculated through an electromagnetic-structure co-simulation. Subsequently, the regularities of distribution of the current density, magnetic flux density, and the electromagnetic force in and ultimate deformations of the SCJ are obtained. Finally, experiments regarding the actions of necking, kinking, and transverse electromagnetic force are conducted and a conclusion is obtained：passive electromagnetic armor can damage an SCJ. Through static penetration experiments with armor-piercing projectiles whose diameters are 39.2mm, it is found that their penetrative capability is reduced 8.6% when the charging voltage is 5 kV and peak current is 150 kA.

关 键 词：被动电磁装甲 脉冲电流 射流 趋肤效应 颈缩 扭曲 横向电磁力 

分 类 号：TJ819[兵器科学与技术—武器系统与运用工程]