Název:
Aeroelastic divergence modeled by means of the stochastic resonance
Autoři:
Náprstek, Jiří ; Pospíšil, Stanislav Typ dokumentu: Příspěvky z konference Konference/Akce: Engineering Mechanics 2014 /20./, Svratka (CZ), 2014-05-12 / 2014-05-15
Rok:
2014
Jazyk:
eng
Abstrakt: The divergence is one of the most important and dangerous phenomenon of aeroelastic post-critical states occurring at a prismatic slender beam in a cross-flow. This phenomenon manifests by stable periodic hopping between two nearly constant limits perturbed by random noises. Experimental observation and numerical simulation motivates an idea to model this process as the effect of the stochastic resonance. Being observed and practically used in a number of disciplines in physics (optics, plasma physics, atd.) its mathematical basis follows in the most simple case from properties of the Duffing equation with negative linear part of the stiffness. The occurrence of this phenomenon depends on certain combinations of input parameters, which can be determined theoretically and verified experimentally in the wind tunnel.
Klíčová slova:
aeroelastic divergence; interwell hopping; non-linear vibration; stochastic resonance Číslo projektu: GC13-34405J (CEP) Poskytovatel projektu: GA ČR Zdrojový dokument: Engineering Mechanics 2014. 20th International conference. May 12-15, 2014, Svratka, Czech Republic. Book of full texts, ISBN 978-80-214-4871-1, ISSN 1805-8248 Poznámka: Související webová stránka: http://www.itam.cas.cz/?pid=5
Instituce: Ústav teoretické a aplikované mechaniky AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný v repozitáři Akademie věd. Původní záznam: http://hdl.handle.net/11104/0233624