TY - GEN
T1 - Targeted energy transfer for suppressing aeroelastic instability due to unsteady lift
AU - Lee, Young S.
AU - Vakakis, Alexander F.
AU - Bergman, Lawrence A.
AU - McFarland, D. Michael
AU - Kerschen, Gaëtan
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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U2 - 10.2514/6.2009-2320
DO - 10.2514/6.2009-2320
M3 - Conference contribution
AN - SCOPUS:84855638489
SN - 9781563479731
T3 - Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
BT - 17th 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
PB - American Institute of Aeronautics and Astronautics Inc.
ER -