TY - GEN
T1 - Linear stability approach to explain lock-in transition and time sharing in vortex-induced vibrations of slender structures
AU - Violette, Rémi
AU - Szydlowski, Julien
AU - De Langre, Emmanuel
PY - 2009/12/1
Y1 - 2009/12/1
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/77952907016
U2 - 10.1115/OMAE2009-80132
DO - 10.1115/OMAE2009-80132
M3 - Conference contribution
AN - SCOPUS:77952907016
SN - 9780791843451
T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
SP - 869
EP - 876
BT - Proceedings of the 28th International Conference on Ocean, Offshore and Arctic Engineering 2009, OMAE2009
T2 - 28th International Conference on Ocean, Offshore and Arctic Engineering, OMAE2009
Y2 - 31 May 2009 through 5 June 2009
ER -