Original title: Stochastic resonance in a simple duffing equation
Authors: Náprstek, Jiří
Document type: Papers
Conference/Event: Colloquium Dynamics of machines 2014, Prague (CZ), 2014-02-04 / 2014-02-05
Year: 2014
Language: eng
Abstract: The response of a dynamic nonlinear single degree of freedom system with cubic characteristic to a combination of additive random Gaussian white noise and external deterministic periodic force is studied. It is coming to light that under certain circumstances the jumping between wells of the bistable elastic potential can occur leading to interwell hopping. The frequency of this hopping can be for certain combination of input parameters nearly constant and corresponding to external periodic force frequency. This state leads to high ratio of periodic component amplitude and intensity of the random component of the response process. In such a case the system can be used as a harmonic selective resonator detecting the useful weak harmonic signal in the high noisy background.
Keywords: interwell hopping; random vibration; stochastic resonance
Project no.: GC13-34405J (CEP)
Funding provider: GA ČR
Host item entry: Dynamika strojů 2014. National Colloquium with international participation. Proceedings, ISBN 978-80-87012-50-5

Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available on demand via the digital repository of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0231160

Permalink: http://www.nusl.cz/ntk/nusl-170456


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