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Suppressing Flow-Induced Vibrations by Parametric Excitation

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Abstract

The possibility of suppressing self-excited vibrations of mechanicalsystems using parametric excitation is discussed. We consider a two-masssystem of which the main mass is excited by a flow-induced, self excitedforce. A single mass which acts as a dynamic absorber is attached to themain mass and, by varying the stiffness between the main mass and theabsorber mass, represents a parametric excitation. It turns out that forcertain parameter ranges full vibration cancellation is possible. Usingthe averaging method the fully non-linear system is investigatedproducing as non-trivial solutions stable periodic solutions and tori.In the case of a small absorber mass we have to carry out a second-ordercalculation.

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Authors and Affiliations

  1. Mathematical Institute, University of Utrecht, P.O. Box 80010, 3508 TA, Utrecht, The Netherlands

    S. Fatimah & F. Verhulst

Authors
  1. S. Fatimah
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  2. F. Verhulst
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Fatimah, S., Verhulst, F. Suppressing Flow-Induced Vibrations by Parametric Excitation. Nonlinear Dynamics 31, 275–298 (2003). https://doi.org/10.1023/A:1022974024810

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