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Communication Dans Un Congrès Année : 2012

Adaptive shunted piezoelectric metacomposite: a new integrated technology for vibroacoustic control

Résumé

In this paper, we present an application of the Floquet-Bloch theorem in the context of electrodynamics for vibroacoustic power flow optimization by mean of distributed and shunted piezoelectric patches. The main purpose of this work is first to propose a dedicated numerical approach able to compute the multi-modal wave dispersions curves into the whole first Brillouin zone for periodically distributed 2D shunted piezomechanical systems. By using two specific indicators evaluating the evanescent part of Bloch's waves and the induced electronic damping, we optimize the piezoelectric shunting electrical impedance for controlling energy diffusion into the proposed semi-active distributed set of cells. Sound radiation efficiency is also analyzed for showing the effects of such smart metamaterial for controlling acoustical noise.
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hal-02300532 , version 1 (19-11-2019)

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Manuel Collet, Morvan Ouisse, Flaviano Tateo, Mohamed Ichchou, Tianli Huang. Adaptive shunted piezoelectric metacomposite: a new integrated technology for vibroacoustic control. Workshop on Design, Control and Software Implementation for Distributed MEMS, Apr 2012, Besançon, France. ⟨10.1109/dMEMS.2012.21⟩. ⟨hal-02300532⟩
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