Affiliations: [a] Graduate School of Information Science and Technology,
Hokkaido University, Sapporo, Japan | [b] Taiyo Yuden Co., Nakamuroda-machi, Takasaki,
Japan
Correspondence:
[*]
Corresponding author: Takahiro Sato, Graduate School of
Information Science and Technology, Hokkaido University Kita-14 Nishi-9
Kita-ku, 060-0814, Sapporo, Japan. Tel.: +81 11 706 6488; Fax: +81 11 706 7670;
E-mail: tsato@em-si.eng.hokudai.ac.jp
Abstract: In parameter optimization using the finite element method (FEM),
re-meshing with long computational time must be performed many times. Although
voxel-based FEM is one of the effective techniques to avoid the re-meshing, it
has less accuracy in comparison with the conventional FEM because of
stair-shaped boundaries. In this work, to improve the computational accuracy in
the voxel-based FEM, a new homogenization method is presented. In the present
method, the effective reluctivity of finite elements at material interfaces is
determined on the basis of magnetic circuit. The present method is successfully
applied to three dimensional shape optimization of an inductor model.
Keywords: Voxel-based finite element method, optimization, homogenization
