Author(s)

H. Igarashi & T. Honma

Abstract

A boundary element analysis of magnetic fields near surfaces H. Igarashi, T. Honma Department of Electrical Engineering, Faculty of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo, 060 Japan ABSTRACT This paper describes a boundary element method for accurate computation of magnetic fields near surfaces of magnetic materials. The present method, which includes two different approaches, is based on the regularization of the quasi singularity in the kernel. The numerical results show that the present method gives accurate magnetic fields near the surface of a magnetic material of a rectangular cross section. INTRODUCTION Design of equipment employing magnetic materials such as magnetic heads and magnets requires highly accurate evaluation of magnetic fields especially near an iron core and in an air gap. The boundary element method (BEM) seems suitable for the computation of the magnetic field of magnetic equipment because they often have considerably fine

Keywords