Piezoaeroelastic Typical Section for Wind Energy Harvesting
 Vagner Candido de Sousa,
 Douglas D’Assunção,
 Carlos De Marqui Jr.
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Abstract
In this paper an electromechanically coupled typical section is modeled for energy harvesting from the aeroelastic oscillations. An airfoil with three degrees of freedom is investigated. Piezoelectric coupling is introduced to the plunge degreeoffreedom and the influence of different load resistances on the overall system behavior is investigated. A free play region is considered in the control surface rotation axis. In the presence of such a concentrated structural nonlinearity, the flowinduced displacements can be harmonic, nonharmonic or chaotic. The presented model can simulate arbitrary airfoil motions as well as represent the nonlinear behavior. The Jones’ approximation to Wagner indicial function is adopted to approximate the aerodynamic loads. An optimal load resistance, which provides both the maximum power and the best passive control of vibration due to the shunt damping effect, is identified. Results show that airflow velocities close to the natural wind are enough to induce selfsustained oscillations and produce persistent power output from scaled piezoaeroelastic generators.
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 Title
 Piezoaeroelastic Typical Section for Wind Energy Harvesting
 Book Title
 Topics in Modal Analysis II, Volume 6
 Book Subtitle
 Proceedings of the 30th IMAC, A Conference on Structural Dynamics, 2012
 Pages
 pp 5361
 Copyright
 2012
 DOI
 10.1007/9781461424192_6
 Print ISBN
 9781461424185
 Online ISBN
 9781461424192
 Series Title
 Conference Proceedings of the Society for Experimental Mechanics Series
 Series ISSN
 21915644
 Publisher
 Springer New York
 Copyright Holder
 The Society for Experimental Mechanics, Inc.
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 Editors

 R. Allemang ^{(ID1)}
 J. De Clerck ^{(ID2)}
 C. Niezrecki ^{(ID3)}
 J.R. Blough ^{(ID4)}
 Editor Affiliations

 ID1. University of Cincinnati
 ID2. Michigan Technological University
 ID3. University Massachusetts Lowell
 ID4. Michigan Technological University
 Authors

 Vagner Candido de Sousa ^{(1)}
 Douglas D’Assunção ^{(1)}
 Carlos De Marqui Jr. ^{(1)}
 Author Affiliations

 1. Department of Aeronautical Engineering, Engineering School of Sao Carlos – University of Sao Paulo, Av. Trabalhador Sancarlense 400, São Carlos, SP, 13566590, Brazil
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