FEM simulation and parameter optimization of a planar eddy current damper

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (18) : 123-127.

CHEN Zheng-qing1, ZHANG Hong-yi1, HUANG Zhi-wen1

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Abstract

To achieve the precise, effective and optimal design, an eddy current TMD is selected as the calculation model. The accuracy of the 3D static electromagnetic finite element analysis method in calculating the damping ratio of a planar eddy current damper is verified. Then the effect on the damping ratio of each design parameter of a planar eddy current damper is analyzed, using this method. The result shows, that the 3D static electromagnetic finite element analysis method can accurately calculate the damping ratio of a planar eddy current damper. Some parameters have great effects on the damping capacity of a planar eddy current damper, such as the thickness of conduct plates, the thickness of steel plates, the distance between magnets, the distance between magnets and conduct plates and the orientation of magnets. These parameters should be fully considered during the design.

Key words

eddy current damping / electromagnetic field / parameter analysis / finite element method (FEM) / permanent magnets

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CHEN Zheng-qing1, ZHANG Hong-yi1, HUANG Zhi-wen1. FEM simulation and parameter optimization of a planar eddy current damper[J]. Journal of Vibration and Shock, 2016, 35(18): 123-127

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