闭合Fe-Si结构中磁致伸缩引起的机械共振研究

doi:10.19595/j.cnki.1000-6753.tces.L90281

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Abstract The noise produced by power transformers and electrical machines is harmful, and its reduction has always been a research hotspot. The vibration system that produces such noise is likely to be in resonance and becomes more drastic, and the resonance may be mechanical force or magnetic force. The interaction between the deformation due to magnetostriction and mechanical resonance of a structure made up of laminated steel sheets is investigated in this paper. In the study of resonance phenomena, it is usually considered that the frequency and the spatial distribution of the electromagnetic forces coincide with the natural frequency and the mode shapes of the corresponding structure. However, it is observed that the magnetostriction may induce a resonance without the aforementioned conditions. Two closed structures of frame-shaped sheet and ring-shaped sheet consisting of cold-rolled grain-oriented (GO) and non-grain oriented (NO) electrical steels are used to confirm this assumption. The finite element (FE) simulated calculations and measurements are compared for vibration displacements. The results of mechanical resonance induced by the magnetostrictive strain from ferromagnetic materials are shown, as well as the corresponding vibration spectrum.

Key words： Laminated steel sheets magnetostrictive deformation mechanical resonance vibration displacements closed structures

Received: 08 July 2020

PACS:	TM271
	TM153+.3

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	Articles by authors
	Li Jingsong
	Liang Zhenzong
	Sun Yinglun
	Li Guofeng
	Yu Keping

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Li Jingsong,Liang Zhenzong,Sun Yinglun等. Study of Mechanical Resonance Induced by Magnetostriction in Closed Structures Based on Fe-Si[J]. Transactions of China Electrotechnical Society, 2022, 37(6): 1321-1328.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L90281 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I6/1321

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