Targeted energy transfer for suppressing aeroelastic instability due to unsteady lift

Young S. Lee, Alexander F. Vakakis, Lawrence A. Bergman, D. Michael McFarland, Gaëtan Kerschen

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We perform a preliminary study of targeted energy transfers for suppressing aeroelastic instabilities due to unsteady aerodynamic forces in a 2-DOF rigid wing coupled to a nonlinear energy sink (NES). As in the aeroelastic model with quasisteady aerodynamic theory, the three suppression mechanisms of aeroelastic instabilities are identified. Utilizing a numerical continuation technique, we demonstrate that some NES parameters provide robust suppression of unsteady aeroelastic instabilities for up to 130% of the linear flutter speed of the aeroelastic model with no NES attached. Wavelet spectra of the suppressed aeroelastic responses show that the dynamic mechanism consists of a series of transient resonance captures.

Original languageEnglish (US)
Title of host publication17th AIAA/ASME/AHS Adaptive Structures Conf., 11th AIAA Non-Deterministic Approaches Conf., 10th AIAA Gossamer Spacecraft Forum, 5th AIAA Multidisciplinary Design Optimization Specialist Conf., MDO
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781563479731
StatePublished - 2009

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508

ASJC Scopus subject areas

  • Architecture
  • General Materials Science
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering


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