Hysteresis of magnetic force-gap in static and dynamic magnetic levitation with a high-Tc superconductor
Hysteresis of magnetic force-gap in static and dynamic magnetic levitation with a high-Tc superconductor
复制标题
高温超导体静态和动态磁悬浮中磁力间隙的磁滞现象
DOI：
10.1051/epjap:2008163
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发表时间：
2008-11
影响因子：
1
通讯作者：
中科院分区：
文献类型：
--
作者：
本文用数值方法研究了静态和动态情况下高温超导体与磁体间磁力随间隙变化的滞后行为。与以往的方法不同，本文基于超导体的宏观电磁本构关系和麦克斯韦方程组，建立了一种基于有限元法的数值计算方法。通过对数值计算结果与实验结果的比较，验证了数值计算程序的正确性，模拟了静态情况下包括主回线和次回线的磁力-间隙磁滞曲线，并进一步分析了主回线与超导体临界电流密度、超导体厚度、磁体剩余磁场、以及超导体与磁体的直径比。在自由振动的情况下，通过研究该磁悬浮系统中悬浮体在不同悬浮/悬浮位置的动态响应，得到了相应的磁力随间隙变化的结果。磁力与气隙关系的数值计算结果显示了强非线性和高滞回特性。
Hysteresis behavior of magnetic force versus gap between a high- T c superconductor and a magnet, in static and dynamic cases, is studied numerically. Differing from the previous methods, based on macro electromagnetic constitutive relation of superconductors and Maxwell equations, a numerical method with the finite element method (FEM) is established. After numerical code is examined by comparing between numerical and experimental results of the relation of magnetic force-gap, the hysteresis curves of magnetic force-gap including major and minor loops in static case are simulated, and furthermore the dependences of major loop on main parameters including the critical current density and the thickness of superconductor, the residual magnetic field of magnet, and the diameter ratio of superconductor to magnet are studied numerically. In the case of free vibration, by investigating dynamic response of levitated body at different levitation/suspension positions in this magnetic levitation system, we obtain the corresponding results of the variation of magnetic force with gap. All the numerical results of the relation between magnetic force and gap show the strongly nonlinear and highly hysteretic behavior.
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影响因子：
--
作者：
Gou Xiao-fan;Yang Yong;Zheng Xiao-jing
通讯作者：
Gou Xiao-fan;Yang Yong;Zheng Xiao-jing
DOI：
10.1016/0921-4534(96)00400-5
发表时间：
1996-09
影响因子：
1.7
作者：
Alvaro Sanchez;C. Navau
通讯作者：
Alvaro Sanchez;C. Navau
影响因子：
4
作者：
F. Moon;M. M. Yanoviak-M.;R. Ware
通讯作者：
F. Moon;M. M. Yanoviak-M.;R. Ware
影响因子：
3.7
作者：
C. Navau;Alvaro Sanchez
通讯作者：
C. Navau;Alvaro Sanchez
影响因子：
3.2
作者：
J. Hull;A. Cansiz
通讯作者：
J. Hull;A. Cansiz