TY - JOUR
T1 - Uncertainty quantification of piezoelectric energy harvesters from aeroelastic vibrations
AU - Abdelkefi, Abdessattar
AU - Hajj, Muhammad R.
AU - Nayfeh, Ali H.
PY - 2012
Y1 - 2012
N2 - A stochastic approach is presented to evaluate the uncertainties associated with variations in design parameters of a piezoaeroelastic energy harvester. The sensitivities of the harvested power to variations in the load resistance, the eccentricity (distance between the center of mass and the elastic axis), and the nonlinear coeffcients are also determined. Moreover, the non-intrusive formulation of the polynomial chaos expansion in terms of the multivariate Hermite polynomials was employed to quantify the sensitivities in the harvested power and the plunge and pitch motions. The results show that the relationship between the input parameters and the harvested power is highly nonlinear. The results show also that the generated power is most sensitive to variations in the eccentricity and that the nonlinear coeffcient of the plunge spring is less influential than the nonlinear coeffcient of the torsional spring on the harvester's performance.
AB - A stochastic approach is presented to evaluate the uncertainties associated with variations in design parameters of a piezoaeroelastic energy harvester. The sensitivities of the harvested power to variations in the load resistance, the eccentricity (distance between the center of mass and the elastic axis), and the nonlinear coeffcients are also determined. Moreover, the non-intrusive formulation of the polynomial chaos expansion in terms of the multivariate Hermite polynomials was employed to quantify the sensitivities in the harvested power and the plunge and pitch motions. The results show that the relationship between the input parameters and the harvested power is highly nonlinear. The results show also that the generated power is most sensitive to variations in the eccentricity and that the nonlinear coeffcient of the plunge spring is less influential than the nonlinear coeffcient of the torsional spring on the harvester's performance.
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U2 - 10.1051/matecconf/20120103007
DO - 10.1051/matecconf/20120103007
M3 - Conference article
AN - SCOPUS:84903529059
VL - 1
JO - MATEC Web of Conferences
JF - MATEC Web of Conferences
M1 - 03007
T2 - 1st International Conference on Structural Nonlinear Dynamics and Diagnosis, CSNDD 2012
Y2 - 30 April 2012 through 2 May 2012
ER -