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http://dx.doi.org/10.3795/KSME-A.2010.34.7.821

Topology Optimization of Perpendicular Magnetic Recording System by Considering Magnetic Nonlinearity  

Park, Soon-Ok (Dept. of Mechanical Engineering, Yonsei Univ.)
Yoo, Jeong-Hoon (Dept. of Mechanical Engineering, Yonsei Univ.)
Min, Seung-Jae (School of Mechanical Engineering, Hanyang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.34, no.7, 2010 , pp. 821-827 More about this Journal
Abstract
This paper proposes a density method based topology optimization of a perpendicular magnetic recording system design in which the saturation effect is taken into account. During the topology optimization process in magnetic fields, the magnetic reluctivity is updated in accordance with the changes in element density determined by a sensitivity analysis. The magnetic reluctivity is determined from a B-H curve and is used to represent nonlinear material property, i.e., the saturation effect. The sensitivity for a generalized response functional is formulated using the adjoint variable method in which the nonlinear property is taken into account and the objective function is set such that the magnetic energy in the media is maximized. Effects due to the nonlinear property can be observed from a numerical study in which the linear and the nonlinear topology optimization results are compared.
Keywords
Topology Optimization; Sensitivity Analysis; Adjoint Variable Method; Magnetic Saturation Effect; Finite Element Method; Density Method;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 1
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