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Based on the von Karman thin circular plate theory, we report in this paper the analysis of the nonlinear behavior of a power harvester consisting of a circular piezoelectric plate and an electric resistance. Dependence of the output power of the harvester upon driving frequency for different electric loads and different applied forces is obtained. Numerical results show that the output power exhibits multi- valuedness and a jump phenomenon near resonance.
Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on (Volume:55 , Issue: 9 )
Date of Publication: September 2008