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

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.

References

Bao, C. and Pan, J. , 1997, “Experimental study of different approaches for active control of sound transmission through double walls,” Journal of Acoustical Society of America 102, 1664-1670.

Bondoux, D. , 1996, “Piezo-damping of light structures: Modelling and experimental results,” in 3rd International Conference on Dynamics and Control of Structures in Space Cranfield University, England 143, pp. 229-248.

Carneal, J. P. and Fuller, C. R. , 1995, “Active structural acoustic control of noise transmission through double panel systems,” AIAA Journal 33(4), 618-623.

Collet, M. and Jezequel, L. , 1994, “Active modal control with piezoelectric layers optimisation,” Journal of Structural Control 1(2), 59-78.

Gardonio, P. and Elliot, S. J. , 1998, “Active control of structure-borne and air-borne sound transmission through double panel,” AIAA Journal 23(53), 864-879.

Gagliardini, L. , Pascal, B. , and Rolland, J. , 1995, “Dispositif d’atténuation acoustique à double paroi active,” CSTB Patent Number 2704969.

Hac, A. and Liu, L. , 1993, “Sensors and actuators location in motion control of flexible structures,” Journal of Sound and Vibration 167(2), 239-261.

Jacob, A. and Moser, M. , 1999, “Enhancement of the transmission loss of double panels by means of actively controlling the cavity sound field,” Active99 Congress 1, 1-12.

Jemai, B. , Ichchou, M. N. , and Jezequel, L. , 1999, “An assembled plate active control damping set-up: optimisation and control,” Journal of Sound and Vibration 225(2), 327-343.

10.

Lesueur, C. , 1988, Rayonnement Acoustique des Structures, Eyrolles, Paris.

11.

Meirovich, L. , 1989, Dynamic and Control of Structures, John Wiley and Sons, New York.

12.

Paurobally, R. , Pan, J. , and Bao, C. , 1999, “Feedback control of noise transmission through a double panel partition,” Active99 Congress 1, 375-387.

13.

Pietrzko, S. and Kaiser, O. , 1999, “Experiments on active control of air borne sound transmission through double wall cavity,” Active99 Congress 1, 355-363.

14.

Sampath, A. and Balachandran, B. , 1997, “Studies on performance functions for interior noise control,” Smart Materials and Structures 6, 315-322.

15.

Sampath, A. and Balachandran, B. , 1999, “Active control of multiple tones in an enclosure,” Journal of the Acoustical Society of America 106(1), 211-225.

16.

Sas, P. , Augusztinovics, F. , Bao, C. , and Desmet, W. , 1995, “Active control of sound transmission through a double panel partition,” Journal of Sound and Vibration 180(4), 609-625.