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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 108
PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping
Paper 239
Semi-Passive Noise and Vibration Control using Intelligent Piezoelectric Systems W. Larbi, L.P. da Silva and J.F. Deü
Structural Mechanics and Coupled Systems Laboratory, Conservatoire National des Arts et Métiers, Paris, France , "Semi-Passive Noise and Vibration Control using Intelligent Piezoelectric Systems", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 239, 2015. doi:10.4203/ccp.108.239
Keywords: noise and vibration reduction, shunted piezoelectrics, finite element method, acoustic power radiation, dominant radiation modes.
Summary
This paper is concerned with the numerical modeling of noise and vibration reduction 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 radiating vibration modes and to attenuate the corresponding resonances by using piezoelectric patches bonded on the structures and connected to resistive or resonant shunt circuits. 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, suitable 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 the proposed approach.
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