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AN EFFICIENT FINITE ELEMENT APPROACH FOR REDUCTION OF STRUC-TURAL VIBRATION AND ACOUSTIC RADIATION BY PASSIVE SHUNTED PIE-ZOELECTRIC SYSTEMS

Silva, L.P. da; Deü, J.-F.; Larbi, W.; Trindade, M.A.;

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The present work concerns the numerical modeling of noise and vibration reduc-tion of thin radiating structures in the low frequency range by using shunted piezoelectric elements. The aim is to propose an efficient approach able to predict the structures most ra-diating vibration modes and to attenuate these modes by using piezoelectric patches bonded on the structure and connected to resistive or resonant shunt. The first step is to estimate the sound power radiated by the structure and determine the vibration modes to be controlled. In a second step, an original finite element formulation, adapted to any elastic structures with surface-mounted piezoelectric patches, is proposed to solve the electromechanical problem. Finally, numerical examples are presented in order to validate and analyze our approach.

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Palavras-chave: Vibration and sound reduction, Piezoelectric shunt, Finite element method.,

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DOI: 10.5151/meceng-wccm2012-18811

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Como citar:

Silva, L.P. da; Deü, J.-F.; Larbi, W.; Trindade, M.A.; "AN EFFICIENT FINITE ELEMENT APPROACH FOR REDUCTION OF STRUC-TURAL VIBRATION AND ACOUSTIC RADIATION BY PASSIVE SHUNTED PIE-ZOELECTRIC SYSTEMS", p. 2302-2321 . In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 2358-0828, DOI 10.5151/meceng-wccm2012-18811

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