622 - Sound transmission through aircraft panels subjected to boundary layer pressure fluctuations
Liu B.
Abstract
In an earlier paper, a deterministic approach based on modal expansion and receptance method was developed in predicting random noise transmission through curved aircraft panels with stringers attachments [1]. In this paper, the method was extended to predict the sound transmission of stiffening panels subjected to turbulent boundary excitation. The Corcos and Efimtsov models were used to characterize the dynamic surface pressure cross-spectra. Closed-form solutions for the panel displacements, radiation and transmission pressures were obtained. Numerical examples are presented to illustrate the influence of the stringers, curvature, structural dissipation and the hydrodynamic coincidence on the structural and acoustic response of the panel.
Citation
Liu B.: Sound transmission through aircraft panels subjected to boundary layer pressure fluctuations , CD-ROM Proceedings of the Thirtheenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006, Vienna, Austria, Eds.: Eberhardsteiner, J.; Mang, H.A.; Waubke, H., Publisher: Vienna University of Technology, Austria, ISBN: 3-9501554-5-7
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