Transverse demagnetizing factors of long rectangular bars. II. Numerical calculations for arbitrary susceptibility

被引:30
作者
Pardo, E [1 ]
Sanchez, A
Chen, DX
机构
[1] Univ Autonoma Barcelona, Dept Fis, Grp Electromagnetisme, E-08193 Barcelona, Catalonia, Spain
[2] UCM, RENFE, CSIC, Inst Magnetismo Aplicado, Madrid 28230, Spain
关键词
D O I
10.1063/1.1459746
中图分类号
O59 [应用物理学];
学科分类号
摘要
For an infinitely long bar with rectangular cross section 2ax2b and constant susceptibility chi in a uniform transverse applied field H-a along dimension a, the fluxmetric and magnetometric demagnetizing factors N-f,N-m as functions of a/b and chi are accurately computed using a finite-elements method. By comparison of the computed results with exact analytical results for chi=-1,0,infinity and with a set of conjugate relations derived in this work, the elements distributions have been optimized to give a minimum discretization error. This error is further greatly reduced in the final results of N-f,N-m by using an error correction approach previously proposed in a similar work for cylinders. (C) 2002 American Institute of Physics.
引用
收藏
页码:5260 / 5267
页数:8
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