细长圆柱体非均匀磁化研究

Study on Heterogeneous Magnetization of Slender Cylinders

摘要:

一般认为细长圆柱形均匀介质在均匀外磁场中是均匀磁化，但近距离试验证明其轴向是非均匀磁化。细长体是一类较普遍存在的物体，近距离试验时其非均匀磁化特性十分重要，这方面的研究有现实意义。应用圆柱体面磁荷和体磁荷观点建立圆柱体磁化强度方程组，解方程得到其磁化强度曲线，由曲线计算得到的场强结果和试验数据吻合。这种得到圆柱体磁化强度曲线的结果和方法在以前文献中未见报道。

Abstract:

It is generally considered that slender cylindrical homogeneous medium is uniformly magnetized in the uniform external magnetic field. But tests from near distance prove that the axial direction of the medium is non-uniformly magnetized. The slender body is a kind of ubiquitous object，whose non-uniform magnetization characteristics are very important for tests from near distance. Tests in this area have practical significance. Equations for the magnetization of a cylinder are established from the viewpoint of surface & body magnetic charge， and the magnetization curve is obtained by solving the equations. The calculated results of field strength from the curves are in good agreement with the experimental data. The result and method for calculating the magnetization curve of a cylinder has not been reported in previous literature.