Studies on magnetic shielding effectiveness by finite element method

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	Studies on magnetic shielding effectiveness by finite element method
	Wu GH(武高辉); Huang XL(黄晓莉); Duan MQ(段茂强); Zhang Q(张强); Chen, X
	2009
会议名称	2nd International Conference on Multi-Functional Materials and Structures, MFMS-2009
会议日期	October 9-12, 2009
会议地点	Qingdao, China
关键词	Magnetic shielding effectiveness Finite element method iron
页码	1233-1236
通讯作者	武高辉
中文摘要	Maxwell 2D software is introduced in this paper to calculate the magnetic shielding effectiveness (MSE) properties of iron plate. The three-dimensional magnetic shield is thought isotropic and simplified as two-dimensional model to study its MSE properties by the finite element method. In this method, a uniform magnetic field is generated by two huge magnets and the MSE properties of iron plate, which is in the centre of the uniform magnetic field, is then calculated by the ratio of magnetic field intensity after and before magnetic shielding. All the results indicate that shape of shield materials affects the MSE properties much and the MSE properties of shield with square and circular shape with 3mm in depth are 39.3 and 53.5 dB, respectively. That means the shield shape with fewer bending is favorable to the conductivity of magnetic energy. It also shows that the MSE value decreased linearly with the distance between the magnetic shield and the centre of the magnetic field. That is, the increase of side length of magnetic shield will lead to the decrease of MSE properties of iron plate, which is agreement with the theoretical prediction of Lu H.M. model. Furthermore, the MSE properties of double layers shielding (iron plate with 2mm in depth and 3mm iron plate with 81% porosity) are also studied in this paper. The effect of places of iron plate with 2mm in depth is presented to play important role in double layers shielding and the MSE value increases with the distance between the two magnetic shields. Compared to that of shield with circular shape, the MSE properties are similar to each other when the distance of the two shields is 8mm. In addition, it also indicates that the MSE value is higher when the iron plate with 2mm in depth is inside of the other than that when it is outside.
收录类别	EI ; CPCI（ISTP）
产权排序	2
会议录	Advanced Materials Research
会议录出版者	Trans Tech Publications
会议录出版地	Clausthal-Zellerfeld, Germany
语种	英语
ISSN号	1022-6680
ISBN号	978-0-87849-304-3
WOS记录号	WOS:000280155900306
内容类型	会议论文
源URL	[http://ir.sia.cn/handle/173321/19968]
专题	沈阳自动化研究所_工业信息学研究室
推荐引用方式 GB/T 7714	Wu GH,Huang XL,Duan MQ,et al. Studies on magnetic shielding effectiveness by finite element method[C]. 见:2nd International Conference on Multi-Functional Materials and Structures, MFMS-2009. Qingdao, China. October 9-12, 2009.