メタモデリングに基づくトポロジー最適化問題における設計パラメータ決定法

(永久磁石同期モータ設計への展開)

抄録

In the topology optimization problem, quantities defining design regions or boundary conditions are treated as design parameters. However, these design parameters can be variable from the viewpoint of application to mechanical design. The value of the design parameters may have a significant influence on the performance of structure. In this research, we proposed an approach for finding appropriate values of design parameters in the topology optimization problem. In the proposed method, the problem of optimizing the structure and design parameters is replaced with a set of two problems, which avoids a difficulty in topology optimization problem due to the change of the design parameter. By introducing metamodeling, design parameters can be optimized with low computational cost. We apply the proposed method to PMSM design problem and show effectiveness of changing design parameters.