Linear stability approach to explain lock-in transition and time sharing in vortex-induced vibrations of slender structures

Abstract : In this paper, we use a linearized version of a wake oscillator model in order to understand VIV of flexible structures. By a simple analytical development on the stability of an infinite cable/wake system, we demonstrate the existence a temporal instability. The theoretical study is pushed further to finite structure, a tensioned cable, for which modes frequency, amplitude growth rate in time and velocity range of instability are easily derived. The developed concepts are used to explain experimentally observed behaviours of a low flexural rigidity tensioned beam undergoing VIV. Copyright © 2009 by ASME.
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Communication dans un congrès
28th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2009), May 2009, Honolulu, United States. American Society of Mechanical Engineers, 5, pp.869-876, 2009, 〈10.1115/OMAE2009-80132〉
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https://hal-polytechnique.archives-ouvertes.fr/hal-01025996
Contributeur : Denis Roura <>
Soumis le : lundi 21 juillet 2014 - 21:00:36
Dernière modification le : jeudi 10 mai 2018 - 02:03:13

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R. Violette, J. Szydlowski, Emmanuel De Langre. Linear stability approach to explain lock-in transition and time sharing in vortex-induced vibrations of slender structures. 28th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2009), May 2009, Honolulu, United States. American Society of Mechanical Engineers, 5, pp.869-876, 2009, 〈10.1115/OMAE2009-80132〉. 〈hal-01025996〉

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