Noise reduction in double-panel structures by cavity and panel resonance control
conference paper
This paper presents an investigation of the cavity and the panel resonance control in a double‐panel structure. The double‐panel structure, which consists of two panels with air in the gap, is widely adopted in many applications such as aerospace due to its light weight and effective transmission‐loss at high frequency. However, the resonance of the cavity and the poor transmission‐loss at low frequency limit its noise control performance. Applying active control forces on the panels or utilizing loudspeakers in the cavity to reduce the noise prob-lem have been discussed in many papers. In this paper, the resonance of the cavity and the panels are considered simultaneously to increase the noise transmission‐loss. A structur-al‐acoustic coupled model is developed to investigate the vibration of the two panels, the acoustic resonance in the air cavity, and the control performance. The control design can be optimized through the model. Finally, the results will be presented and discussed.
TNO Identifier
462266
Publisher
International Institute of Acoustics and Vibration
Source title
18th International Congress on Sound and Vibration 2011, ICSV 2011, 10-14 July 2011, Rio de Janeiro, Brazil
Collation
8 p.
Place of publication
Auburn, AL
Files
To receive the publication files, please send an e-mail request to TNO Repository.