Authors: Y Shahbazi M R Chenaghlou K Abedi M J Khosrowjerdi A Preumont
Publish Date: 2012/06/24
Volume: 18, Issue: 12, Pages: 1981-1989
Abstract
In this paper we proposed a smart cylindrical membrane shell panel SCMSP model for vibrationbased energy harvester The SCMSP is made of an orthotropic elastic core covered by outer PVDF layers with transverse polarization vector Electrodynamics governing equations of motion are derived by applying extended Hamilton’s principle The governing equations are based on Donnell’s linear thin shell theory The SCMSP displacement fields are expanded by means of double Fourier series satisfying immovable edges with free rotation boundary conditions and coupled system of linear partial differential equations are obtained The discretized linear ordinary differential equations of motion are obtained using Galerkin method The output power is taken as an indicating criterion for the generator A parametric study for MEMS applications is conducted to predict the power generated due to radial harmonic ambient vibration Optimal resistance value is also obtained for the particular electrode distribution that gives maximum output power A low vibration amplitude 5 Pa and a lowfrequency 47179 Hz vibration source is targeted for the resonance operation in which the output power of 04111 μW and peaktopeak voltage of 02952 V are predicted
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