基于相关性判据的磁体磁性磁偶极子近似距离条件分析  

Range condition analysis of magnetic dipole approximation for a magnet magnetism based on correlation criterion

作　　者：王光辉[1] 郭正东[1] 王超[1] 高盛峰 

机构地区：[1]海军潜艇学院航海观通系,山东青岛266042

出　　处：《海军工程大学学报》2016年第2期57-59,112,共4页Journal of Naval University of Engineering

基　　金：国家部委基金资助项目(B2120132005)

摘　　要：针对磁体磁偶极子近似的距离条件问题,提出了基于磁体磁场分布与磁偶极子模型相关性的判定方法。解析计算了不同高度平面内、不同CPA距离直线路径上典型纵向均匀磁化旋转椭球的磁场。相关性分析表明:磁偶极子近似的距离接近两倍的长轴长度。若借助ANSYS、Ansoft Maxwell等有限元分析软件,该方法可推广于一切已知磁性材料分布的磁体。A method to analyze range condition of magnetic dipole approximation for a magnet magnetism is developed based on the correlation of the magnet′s field distribution and magnetic dipole model.By utilizing this method,the magnetic dipole approximation degree of a type longitudinal uniform magnetic ellipsoid is calculated at the different CPA distance path of different altitude horizontal plane.Analysis results show that the range condition of magnetic dipole approximation is nearly twice of that of ellipsoid′s long axis.The method may be used to all magnet when the magnetism material distribution is known by use of the finite element analysis（FEA）software,such as ANSYS,Ansoft Maxwell and so on.

关 键 词：磁体磁性 磁偶极子 旋转椭球 相关性 

分 类 号：O441[理学—电磁学]