Non-linear oscillations in a passive magnetic suspension

The paper analyzes the dynamical behavior of a single degree of freedom (SDOF) passive magnetic suspension realized coupling traditional springs with rare-earth permanent magnets. The natural frequency of the device depends weakly on the mass due to the strongly non-linear magnetic repulsive force....

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Bibliographic Details
Published in:International journal of non-linear mechanics 2006-11, Vol.41 (9), p.1039-1049
Main Authors: D’Angola, A., Carbone, G., Mangialardi, L., Serio, C.
Format: Article
Language:English
Subjects:
Jump phenomena
Non-linear oscillations
Rare-earth permanent magnets
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Summary:The paper analyzes the dynamical behavior of a single degree of freedom (SDOF) passive magnetic suspension realized coupling traditional springs with rare-earth permanent magnets. The natural frequency of the device depends weakly on the mass due to the strongly non-linear magnetic repulsive force. The system exhibits features typical of non-linear oscillators, such as jump phenomena and multivalued frequency–response curves. In fact, for appropriate combinations of the parameters, multiple steady-state solutions appear. The periodic stationary solutions and the stability properties are investigated numerically and with a semi-analytical approach. Finally, comparisons with experimental results have been reported.
ISSN:0020-7462
1878-5638
DOI:10.1016/j.ijnonlinmec.2006.10.013