Analysis of magnetic shielding effect of layered shields based on homogenization

• Published in: IEEE transactions on magnetics Vol. 42; no. 4; pp. 847 - 850
• Main Authors: Waki, H., Igarashi, H., Honma, T.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.04.2006; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Boundary conditions; Composite materials; Composite structures; Cross-disciplinary physics: materials science; rheology; Effective permeability; Exact sciences and technology; Fine structure; Homogenization; Homogenizing; Magnetic analysis; Magnetic fields; Magnetic flux; Magnetic materials; Magnetic shielding; Magnetism; Magnetostatics; Materials science; nonlinear analysis; Nonlinearity; Other topics in materials science; Periodic structures; Permeability; Physics; Shields; Steel; Proceedings; Effective permeability; magnetic shielding; nonlinear analysis; Magnetic permeability; Homogenization; Calculus; Shielding; Electromagnetic shielding; Magnetic properties
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2006.872480

This paper describes a nonlinear analysis of magnetic field based on homogenization. The analysis of a magnetic field is time-consuming when the problem includes magnetic substance with fine structure. Simplification of the fine structure by homogenization makes it possible to analyze them efficiently. The authors have introduced a homogenization method to estimate effective permeability of magnetic composite structure for a static field. This method can be applied not only for linear problems but also nonlinear ones. In this paper, the magnetic shielding effect of layered nonlinear material is analyzed by using the homogenization method, and the applicability of this method is discussed