多层堆叠式永磁动力减振刀杆设计与仿真分析

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Abstract Aiming at the problems of rubber fatigue aging, easy leakage of damping fluid, and difficulty in precise design of stiffness and damping of traditional dynamic vibration absorber in large aspect ratio cutter bar, a multi-stacked permanent dynamic vibration absorber with magnetic stiffness and eddy current damping to provide stiffness and damping was designed, this design can tune the stiffness and damping of proposed cutter bar efficiently and independently. The unique stacked structure can provide more magnetic stiffness and eddy current damping at the same space, which ensures that the permanent dynamic vibration absorber can achieve a better optimal vibration reduction condition. The theoretical calculation models of magnetic stiffness and eddy current damping in multi-stacked permanent dynamic vibration absorber were established respectively, and the relationships between magnetic stiffness and eddy current damping and the size parameters of each part of permanent dynamic vibration absorber were explored with MATLAB software and Maxwell electromagnetic simulation software respectively. Finally, MATLAB software was used to simulate and analyze the cutter bar installed with the permanent magnet dynamic vibration absorber and the original cutter bar with the same size, the results show that the maximum amplitude of frequency response function of the utter tip decreased by over 90% with the use of permanent dynamic vibration absorber.

Key words： dynamic vibration absorber eddy current damping finite element magnetic stiffness

Received: 14 October 2020 Published: 15 February 2022

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	Articles by authors
	WANG Min1
	2
	LIU Baozhong1
	QIN Peng1
	SUN Tiewei1

Cite this article:

WANG Min1,2,LIU Baozhong1, et al. Design and simulation analysis for multilayer stacked permanent magnet dynamic vibration absorber cutter bar[J]. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(3): 8-17.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2022/V41/I3/8

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