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Radiated Sound Power from a Curved Honeycomb PanelThe validation of finite element and boundary element model for the vibro-acoustic response of a curved honeycomb core composite aircraft panel is completed. The finite element and boundary element models were previously validated separately. This validation process was hampered significantly by the method in which the panel was installed in the test facility. The fixture used was made primarily of fiberboard and the panel was held in a groove in the fiberboard by a compression fitting made of plastic tubing. The validated model is intended to be used to evaluate noise reduction concepts from both an experimental and analytic basis simultaneously. An initial parametric study of the influence of core thickness on the radiated sound power from this panel, using this numerical model was subsequently conducted. This study was significantly influenced by the presence of strong boundary condition effects but indicated that the radiated sound power from this panel was insensitive to core thickness primarily due to the offsetting effects of added mass and added stiffness in the frequency range investigated.
Document ID
20030069018
Acquisition Source
Langley Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Robinson, Jay H. (NASA Langley Research Center Hampton, VA, United States)
Buehrle, Ralph D. (NASA Langley Research Center Hampton, VA, United States)
Klos, Jacob (NASA Langley Research Center Hampton, VA, United States)
Grosveld, Ferdinand W. (Lockheed Martin Engineering and Sciences Co. Hampton, VA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2003
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
AIAA Paper 2003-3156
Meeting Information
Meeting: 9th AIAA/CEAS Aeroacoustics Conference and Exhibition
Location: Hilton Head, SC
Country: United States
Start Date: May 12, 2003
End Date: May 14, 2003
Sponsors: National Oceanic and Atmospheric Administraion, American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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