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Abstract

Towards low frequencies, the sound reduction of a double panel partition has an efficiency loss. A feasibility study is investigated to improve the sound reduction of a realistic double panel partition by means of piezoelectric elements as structural control actuators between the panel boundary. Finite element modeling of the double glazing window permits an understanding of the physical phenomenon governing the vibroacoustic behavior. In particular, the incidence of the fluid cavity and the boundary conditions effects on the insertion loss factor are analyzed. Hence, an original structural control experiment has been conducted using optimized piezoceramic actuators at the double glazing window boundaries. The performances of the proposed control strategy are evaluated and it is shown that an improvement has been achieved with a simple velocity or a pressure feedback control.

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Double Panel Partition (AVNC) by Means of Optimized Piezoceramic Structural Boundary Control

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