..., 1997). Therefore, we propose a topology optimization method that introduces smoothing by CNN to the density method and apply it to the nonlinear magnetic shield problem. The proposed method enables us to achieve the desired shielding performance while avoiding fine structures, which results...

... As a result of applying the proposed methods to a magnetic shielding problem, the multi-layered shielding which effectively reduces the magnetic flux in the target area, is successfully produced. Originality/value The proposed methods enable us to effectively create a hole and to expand the searching area...