Design and Analysis of a Magnetic QZS Vibration Isolator

Hui Li; Jing Zhang

doi:10.4028/www.scientific.net/AMM.470.484

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 470Design and Analysis of a Magnetic QZS Vibration...

Design and Analysis of a Magnetic QZS Vibration Isolator

Abstract:

In this paper, a novel nonlinear magnetic vibration isolator is developed. The developed isolators possess the characteristic of quasi-zero stiffness (QZS). It is obtained by connecting a vertical coil spring with two permanent magnet springs in couple with three permanent magnets. Firstly, the permanent magnet spring is introduced, and approximate expression of repulsive force in the permanent magnet spring is proposed. Secondly, characteristic analysis of system is investigated. It is shown that there is a unique relationship between the stiffness of vertical spring and parameters of system that yields a QZS system. The approximate stiffness of QZS system can be used instead of the analytical stiffness in dynamic analysis.

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Periodical:

Applied Mechanics and Materials (Volume 470)

Pages:

484-488

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.470.484

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Online since:

December 2013

Authors:

Hui Li, Jing Zhang*

Keywords:

Low-Frequency Vibration Isolation, Permanent Magnet Spring, Quasi-Zero-Stiffness, Vibration Isolator

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* - Corresponding Author

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