磁驱动金属飞片速度理论近似解析  

Approximately Theoretical Resolution of the Velocity of the Metallic Flyer Plates Driven by Magnetic Field

作　　者：王桂吉[1] 孙承纬[1] 蒋吉昊[1] 莫建军[1] 谭福利[1] 张宁[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《高压物理学报》2008年第2期137-141,共5页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(10472108);中国工程物理研究院重大基金项目(2004Z0101)

摘　　要：从能量守恒关系出发,在一定假设的基础上,提出了一个近似估计磁驱动金属飞片速度的一维物理模型。该模型考虑了磁驱动过程中工作区电感的动态变化以及烧蚀能、磁场能的影响;用3个实验例子验证了该模型的有效性。结果表明,在无冲击形成以及飞片内能累积不大的情况下,用该模型可准确估计飞片的速度。Based on the energy conservation relation and some assumptions, an one-dimensional physical model is proposed to predict the velocity of the metallic flyer plates driven by magnetic field. In this model, the dynamic change of the inductance in work space, the ablation energy and the magnetic field energy produced during the process of magnetic driving are considered. Three experimental examples are used to verify the validity of the model. The results show that the model can accurately predict the velocity of the flyer plates under the conditions of no shock formation and no obvious internal energy accumulation in the plates.

关 键 词：磁驱动 金属飞片 能量守恒 飞片速度 

分 类 号：O521[理学—高压高温物理]