磁爆加载初始阶段薄壁金属管的冲击变形研究

夏 明;黄正祥 顾晓辉 张先锋

振动与冲击 ›› 2012, Vol. 31 ›› Issue (14) : 7-10.

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (14) : 7-10.
论文

磁爆加载初始阶段薄壁金属管的冲击变形研究

  • 夏 明 1,2 黄正祥1 顾晓辉1 张先锋1
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Study on the shock-produced deformation of a thin-walled metal tube subjected to a magnetic load caused by FCG in the initial stage

  • XIA Ming 1,2 ,HUANG Zheng-xiang 1 ,GU Xiao-hui 1,ZHANG Xian-feng 1
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摘要


摘 要:通过对磁爆加载初始阶段脉冲磁动力对薄壁金属管加载过程的分析,将加载过程离散为强流发生、磁场形成和冲击加载三个进程,进而建立了薄壁金属管受磁载荷冲击变形的理论模型,并在此基础上,利用MAXWELL和AUTODYN软件联合仿真的方法研究了薄壁金属管的冲击变形特征,最后对结果进行了试验验证。研究表明:理论分析、数值仿真和试验结果吻合较好,薄壁金属管在脉冲磁动力加载下的变形趋势与其外侧包裹炸药爆炸加载的情况相似,磁动力分布及其第一峰值的时间进程直接影响薄壁金属管的最终变形。

Abstract

Abstract: By analyzing the process of the shock-produced deformation of a thin-walled metal tube subjected to a magnetic load caused by FCG (Flux Compression Generator) in initial stage, which is decoupled with three phases: high current production, magnetic field formation and shock loading, a theoretical model is established. Meanwhile, on the basis of the theoretical model, associated simulation methods are applied to study the deformation characteristics with the software MAXWELL and AUTODYN, and experimental verification is done finally. The results show that the theoretical, simulation and experimental results coincide well, the deformation tendencies of the thin-walled metal tube caused by a pulsed magnetic dynamic load and an exploding load are similar, and the distribution also with the first peak time history of the pulsed magnetic dynamic load directly affect the final deformation of the metal tube.

关键词

磁爆加载 / 初始阶段 / 薄壁金属管 / 冲击变形

Key words

magnetic load caused by FCG / the initial stage / thin-walled metal tube / shock-produced deformation

引用本文

导出引用
夏 明;黄正祥 顾晓辉 张先锋. 磁爆加载初始阶段薄壁金属管的冲击变形研究[J]. 振动与冲击, 2012, 31(14): 7-10
XIA Ming;;HUANG Zheng-xiang ;GU Xiao-hui;ZHANG Xian-feng . Study on the shock-produced deformation of a thin-walled metal tube subjected to a magnetic load caused by FCG in the initial stage[J]. Journal of Vibration and Shock, 2012, 31(14): 7-10

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