Study of Mechanical Resonance Induced by Magnetostriction in Closed Structures Based on Fe-Si
Li Jingsong1, Liang Zhenzong1, Sun Yinglun1, Li Guofeng1, Yu Keping2
1. School of Electrical Engineering Dalian University of Technology Dalian 116024 China; 2. Global Information and Telecommunication Institute Waseda University Tokyo 169-8050 Japan
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.
李劲松, 梁振宗, 孙英伦, 李国锋, 余恪平. 闭合Fe-Si结构中磁致伸缩引起的机械共振研究[J]. 电工技术学报, 2022, 37(6): 1321-1328.
Li Jingsong, Liang Zhenzong, Sun Yinglun, Li Guofeng, Yu Keping. Study of Mechanical Resonance Induced by Magnetostriction in Closed Structures Based on Fe-Si. Transactions of China Electrotechnical Society, 2022, 37(6): 1321-1328.
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2022, Vol. 37 
