针对磁通蠕动效应的超导悬浮动力运动比较研究  

Comparative studies on dynamic behavior of superconducting levitation system with consideration of flux creep

作　　者：苟晓凡[1] 郑晓静[2] 周又和[2] 陈国荣[1] 

机构地区：[1]河海大学工程力学系,南京210098 [2]兰州大学力学系,兰州730000

出　　处：《计算力学学报》2007年第5期585-590,共6页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金青年基金(10502019);中国博士后基金(20060390955);江苏省博士后科研资助计划资助项目

摘　　要：针对超导-永磁悬浮系统,分别采用描述超导宏观电磁场本构关系的磁通流动模型和磁通流动与蠕动模型,定量模拟了自由悬浮于超导体上方永磁体的振动。通过比较研究说明磁通蠕动效应对超导悬浮动力运动的影响程度以及这一影响随超导临界电流密度、系统外加激励振幅和频率的变化规律。　Based on macro-electromagnetic constitutive relation of superconductivity： flux flow model and flux flow and creep model,numerical simulation of vibration of magnet levitated above a superconductor in superconductor-magnet levitation systems has been carried out.By comparatively studying,the influences of flux creep in superconductor on dynamic behavior are exhibited,furthermore,the variation of these influences with the critical current density,the amplitude,and frequency of applied excitation have been investigated.

关 键 词：超导悬浮 动力运动 磁通蠕动 磁通流动与蠕动模型 比较研究 

分 类 号：O344.3[理学—固体力学]