磁爆加载薄壁金属管的冲击变形实验研究  

Experimental Research on Shock-produced Deformation of Thin-walled Metal Tubes Subjected to the Magnetic Dynamic Load and Electrical Explosion

作　　者：夏明[1,2] 黄正祥[1] 顾晓辉[1] 祖旭东[1] 王叶中[1] 贾鑫[1] 

机构地区：[1]南京理工大学智能弹药技术国防重点学科实验室,江苏南京210094 [2]总参工程兵科研三所,河南洛阳471023

出　　处：《兵工学报》2013年第3期257-262,共6页Acta Armamentarii

基　　金：国家部委预先研究项目(51326030104H)

摘　　要：利用构建的磁爆加载实验平台,对脉冲磁动力与电爆炸耦合效应作用下薄壁金属管的冲击变形进行了研究,获得了加载过程的强流放电波形,以及不同结构和材料薄壁金属管的冲击变形。结果表明:以脉冲电容器组为能源时,RLC电路过程能较好地反映加载时的强流放电特性;相同结构薄壁金属管的冲击变形主要受加载方式的影响,加载过程产生的焦耳热使材料显著升温,更易于变形,但高温将导致材料气化,无法形成磁聚毁伤元;磁聚毁伤元不宜采用低熔点或低延展性材料,相比铝材,紫铜更优,而截锥管比圆管结构更易于控制形成磁聚毁伤元。The magneto-hydrodynamic explosive loading simulation platform is used to study shock-pro- duced deformation of thin-walled metal tubes subjected to the magnetic dynamic load and electrical explosion, discharge waveforms of the high current and final deformation of the tubes manufactured with different materials and structures are acquired. The result shows that the high current discharge characteristics could be described well by RLC circuit process when the power is capacitor bank, the shock-produced deformation of same structure tubes is mainly affected by loading mode, and materials are heat up significantly by the Joule heat and more easily deformed, but high temperature may lead to gasification and magnetic field shaped charge jet（MSCJ） could not be formed. Low melting point or low ductility materi- als are not suitable for MSCJ made, compared with A1, the Cu material is better, compared with normal tube, truncated cone tube is more easily controlled to form MSCJ.

关 键 词：电磁学 脉冲磁动力 电爆炸 薄壁金属管 冲击变形 磁聚毁伤元 

分 类 号：TJ410.1[兵器科学与技术—火炮、自动武器与弹药工程]