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Comparison of electromechanical transfer matrix models for passive damping involving an array of shunted piezoelectric patches

Abstract : In piezoelectric shunt damping, an array of patches can be a solution to control vibration over a broad frequency range. Implementing a multimodal electrical network gives the possibility to act on several mechanical modes simultaneously. For the study of one-dimensional structures, a periodic layout enables the use of a transfer matrix method that applies on electromechanical state-vectors. Various models can be used to describe the electromechanical unit cells. Indeed, even if the electrical medium is discrete, the mechanical structure can be approximated either by its discrete equivalent, by its homogenized forms or by its finite element model. Offering an increasing complexity, those formulations are compared in order to define their respective limits. It is especially focused on vibration reduction expectations when the considered wavelength is approaching the length of the piezoelectric patches. Depending on the frequency range of interest, it is then possible to choose a suitable model for the analysis of damping systems involving a piezoelectric network.
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Submitted on : Wednesday, March 21, 2018 - 10:56:21 AM
Last modification on : Monday, August 17, 2020 - 5:26:03 PM
Long-term archiving on: : Thursday, September 13, 2018 - 7:27:18 AM

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  • HAL Id : hal-01739575, version 1

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Jean-François Deü, Boris Lossouarn, Mathieu Aucejo. Comparison of electromechanical transfer matrix models for passive damping involving an array of shunted piezoelectric patches. 22nd International Congress on Sound and Vibration, ICSV22, Jul 2015, Florence, Italy. ⟨hal-01739575⟩

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