【摘要】 以球形永磁体和球形容器为对象,推导出永磁体磁浮力模型,分析磁导率、永磁体的剩余磁化强度和永磁体半径、容器半径以及永磁体相对于容器中心位置的位移对磁场力的影响,结论具有一定普遍性.计算结果表明各参数均遵循一定规律对磁场力产生影响,始终有满足自悬浮现象的条件存在.通过对悬浮平衡位置特征分析,论述各变化参数与自悬浮位置的关系,并讨论实现自悬浮位置的可控性途径.更多还原

【Abstract】 A magnet stably suspending in magnetic fluid is influenced by several factors. The key to analyze prerequisites of suspension of immersed body in magnetic fluids is the establishment of an exact mathematical model. The magnetomechanical modeling of spherical magnet encased in spherical vessel is established. The influence on magnetic force by magnetic conductivity,remnant magnetism and radius of magnet,radius of container and off-centering of magnet is analyzed. The conclusion has universal character. The calculation results indicate that various parameters has inerratic influence to magnetic force,and the conditions for self-suspension always exist. The relation between various parameters and the self-supension position is discussed on the basis of analyzing features of suspension balance position,and methods of controlling self-suspension position are discussed.更多还原