A WAVENUMBER APPROACH TO MODELLING THE RESPONSE OF A RANDOMLY EXCITED PANEL, PART II: APPLICATION TO AIRCRAFT PANELS EXCITED BY A TURBULENT BOUNDARY LAYER

✍ Scribed by C. MAURY; P. GARDONIO; S.J. ELLIOTT

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 407 KB
• Volume: 252
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.2001.4029

✦ Synopsis

Part I of this paper has shown the suitability of wavenumber}frequency approach in the calculation of the vibro-acoustic response of a thin ba%ed plate to a large class of random excitations. Part II describes the application of this formulation to the prediction of the vibration and the acoustic radiation of an aircraft fuselage panel exposed to boundary layer turbulence.

The "rst section brie#y describes the modelling of the wall-pressure #uctuations and justi"es as to why a Corcos-like model for the wall-pressure "eld is suitable for high subsonic #ow applications. In the next sections, several parametric studies are presented. These are "rst used to verify the validity of the hypothesis underlying our simpli"ed model. Then we examine the in#uence of the main physical parameters on the vibro-acoustic response of the system. Finally, the predictions of our model are compared with some previously reported experimental measurements taken on a panel excited by a turbulent boundary layer.

2002 Elsevier Science Ltd.