Deterministic and stochastic analyses of the lock-in phenomenon in vortex-induced vibrations

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11 Scopus citations


The phenomenon of lock-in in vortex-induced vibrations of bluff bodies is studied from a phenomenological model perspective. The theoretical investigation includes asymptotic deterministic and stochastic analyses which are compared with experimental measurements and Monte-Carlo simulations. It is shown that, for the considered parameter space, the model can possess only a single or multiple (co-existing) synchronized solutions, where the stable synchronized solution is hardly affected by the turbulence-induced random fluctuations far from the bifurcation points. These results provide a relatively simple connection between experimental measurements and the model predictions, and they confirm the validity of the phenomenological model for vortex-induced vibrations problems that involve a turbulent wake.

Original languageEnglish
Pages (from-to)17-27
Number of pages11
JournalJournal of Sound and Vibration
StatePublished - 10 Nov 2018


  • Fluid-structure interaction
  • Lock-in phenomenon
  • Vortex-induced vibration
  • Wake-oscillator

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering


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