Solutions to the linear unforced Mathieu equation, and their stabilities, are investigated. Floquet theory shows that the solution can be written as a product between an exponential part and a periodic part at the same frequency or half the frequency of excitation. In the current work, an approach combining Floquet theory with the harmonic balance method is investigated. A Floquet solution having an exponential part with an unknown exponential argument and a periodic part consisting of a series of harmonics is assumed. Then, performing harmonic balance, frequencies of the response are found and stability of the solution is examined over a parameter set. The truncated solution is consistent with an existing infinite series solution for the undamped case. The truncated solution is then applied to the damped Mathieu equation and parametric excitation with two harmonics.
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August 2016
Research-Article
Floquet-Based Analysis of General Responses of the Mathieu Equation
Gizem Acar,
Gizem Acar
Department of Mechanical Engineering,
Michigan State University,
East Lansing, MI 48824
e-mail: dilbergi@egr.msu.edu
Michigan State University,
East Lansing, MI 48824
e-mail: dilbergi@egr.msu.edu
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Brian F. Feeny
Brian F. Feeny
Department of Mechanical Engineering,
Michigan State University,
East Lansing, MI 48824
e-mail: feeny@egr.msu.edu
Michigan State University,
East Lansing, MI 48824
e-mail: feeny@egr.msu.edu
Search for other works by this author on:
Gizem Acar
Department of Mechanical Engineering,
Michigan State University,
East Lansing, MI 48824
e-mail: dilbergi@egr.msu.edu
Michigan State University,
East Lansing, MI 48824
e-mail: dilbergi@egr.msu.edu
Brian F. Feeny
Department of Mechanical Engineering,
Michigan State University,
East Lansing, MI 48824
e-mail: feeny@egr.msu.edu
Michigan State University,
East Lansing, MI 48824
e-mail: feeny@egr.msu.edu
1Corresponding author.
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received August 20, 2015; final manuscript received March 29, 2016; published online May 25, 2016. Assoc. Editor: Marco Amabili.
J. Vib. Acoust. Aug 2016, 138(4): 041017 (9 pages)
Published Online: May 25, 2016
Article history
Received:
August 20, 2015
Revised:
March 29, 2016
Citation
Acar, G., and Feeny, B. F. (May 25, 2016). "Floquet-Based Analysis of General Responses of the Mathieu Equation." ASME. J. Vib. Acoust. August 2016; 138(4): 041017. https://doi.org/10.1115/1.4033341
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