文档介绍：毕业设计(论文) 永磁体磁场分布的解析研究专业年级 02 级工程力学学号 02042218 姓名江晨曦指导教师苟晓凡评阅人二○○六年六月中国南京摘要从分子环流模型出发,利用毕奥- 萨伐特定律,对于仅在一个方向均匀完全充磁的矩形永磁块体,导出了其外部空间磁场分布的解析表达式。在此基础上, 本论文着重针对五块矩形永磁体空间对称放置的情况,给出了其外部空间磁场分布的解析表达式。利用此解析公式,定量研究了三个磁场分量 xB , yB 及 zB 的空间分布并进行了充分分析和讨论。该解析式能精确描述一块至多块矩形永磁体外部空间的磁场分布。关键词: 永磁体;磁场分布;解析表达 ABSTRCT From the molecular current viewpoint ,ananalytic expression exactly describing ic field distribution ofrectangular permanent ized sufficiently inone direction was derived from Biot-Savart ’s low. This thesis isstressed ordance with five circumstances that the symmetry inrectangle permanent space was laid uponthis foundation, and the person who gave out his outside space ic field todistribute separates todivide the type expressed. Using this resolution formula, the distributions ofthe three ic field weights fixed quantity xB , yB and zB was studied .Advance lines are fully analyzed and are discussed. This expression isuseful not only for the case ofone rectangular permanent bulk, but also for that ofseveral rectangular permanent bulks. Key Words: permanent ; ic field distribution; an