The excitation-induced stability (EIS) phenomenon in a harmonically excited bistable Duffing oscillator is studied in this paper. Criteria to predict system and excitation conditions necessary to maintain EIS are derived through a combination of the method of harmonic balance, perturbation theory, and stability theory for Mathieu's equation. Accuracy of the criteria is verified by analytical and numerical studies. We demonstrate that damping primarily determines the likelihood of attaining EIS response when several dynamics coexist while excitation level governs both the existence and frequency range of the EIS region, providing comprehensive guidance for realizing or avoiding EIS dynamics. Experimental results are in good agreement regarding the comprehensive influence of excitation conditions on the inducement of EIS.
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January 2015
Research-Article
Excitation-Induced Stability in a Bistable Duffing Oscillator: Analysis and Experiments
Z. Wu,
Z. Wu
Department of Mechanical Engineering,
e-mail: wuzhen@umich.edu
University of Michigan
, Ann Arbor, MI 48109-2125
e-mail: wuzhen@umich.edu
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R. L. Harne,
R. L. Harne
Department of Mechanical Engineering,
University of Michigan
,Ann Arbor, MI 48109-2125
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K. W. Wang
K. W. Wang
Department of Mechanical Engineering,
University of Michigan
,Ann Arbor, MI 48109-2125
Search for other works by this author on:
Z. Wu
Department of Mechanical Engineering,
e-mail: wuzhen@umich.edu
University of Michigan
, Ann Arbor, MI 48109-2125
e-mail: wuzhen@umich.edu
R. L. Harne
Department of Mechanical Engineering,
University of Michigan
,Ann Arbor, MI 48109-2125
K. W. Wang
Department of Mechanical Engineering,
University of Michigan
,Ann Arbor, MI 48109-2125
Manuscript received September 10, 2013; final manuscript received February 27, 2014; published online October 14, 2014. Assoc. Editor: D. Dane Quinn.
J. Comput. Nonlinear Dynam. Jan 2015, 10(1): 011016 (7 pages)
Published Online: October 14, 2014
Article history
Received:
September 10, 2013
Revision Received:
February 27, 2014
Citation
Wu, Z., Harne, R. L., and Wang, K. W. (October 14, 2014). "Excitation-Induced Stability in a Bistable Duffing Oscillator: Analysis and Experiments." ASME. J. Comput. Nonlinear Dynam. January 2015; 10(1): 011016. https://doi.org/10.1115/1.4026974
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