Magnetic Field Analyses of Architectural Components Using Homogenization Technique
2010
When the magnetic field analyses of the architectural components, in which magnetic materials are distributed complicatedly, are carried out, great efforts toward the modellings and high computational costs are required. To overcome these problems, the homogenization technique seems to be attractive. In this paper, from the standpoint of a practical use, the effectiveness of the homogenization technique is investigated in the analyses of the magnetic disturbance due to a building and the shielding performance of an open-type magnetically shielded room with a wall made up of magnetic cylinders. First, the effect of the region, where the homogenization technique is applied, on the accuracy of the flux distribution is investigated. Then, to examine the possibility that the homogenization technique can be applied to a practical design, the accuracy of the homogenization technique to a real model is investigated. Moreover, the reproduction of the flux distribution of the real model using that obtained from the homogenization technique is also tried. It is shown that the homogenization technique should be applied to not only the region of the magnetic materials but also the air region surrounding them. Moreover, the accuracy of the flux distribution obtained from the homogenization technique is satisfactory for a practical design.
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