Considerations on Topology Optimization of Magnetic Shield Structure for Control of Magnetic Energy

Abstract

In this paper, we present a topology optimization analysis of a magnetic shield in three dimensions. We employ the density method in topology optimization analysis, which design distribution of material using non-dimensional density. In the topology optimization, checkerboard pattern and gray scale make difficult to manufacture. With the density method, filtering is applied to the sensitivity to prevent the appearance of a checkerboard pattern. Penalty parameter is introduced as multiplier of non-dimensional density, it is possible to adjust gray scale. Although technical papers related to penalty parameter can be seen, it is difficult to find research papers that have considered the relation between penalty parameter and gray scale. Therefore, in this study, we investigate the influence of the penalty parameter for the result of topology optimization.