Abstract
We investigate the effects of varying the eccentricity between the gravity axis and the elastic axis on the level of energy harvested from a piezoaeroelastic energy harvester consisting of a pitching and plunging rigid airfoil supported by nonlinear springs. The normal form of the dynamics of the harvester near the Hopf bifurcation is used to determine the critical nonlinear coefficients of the springs and maximize the harvested power for different eccentricities. Two configurations are evaluated in terms of the power generated from limit cycle oscillations and a range of operating wind speeds. The impact of the load resistance on the harvested power is also assessed.
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Abdelkefi, A., Nayfeh, A.H. & Hajj, M.R. Enhancement of power harvesting from piezoaeroelastic systems. Nonlinear Dyn 68, 531–541 (2012). https://doi.org/10.1007/s11071-011-0234-9
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DOI: https://doi.org/10.1007/s11071-011-0234-9