An Envelope Method For Stress Analysis Of An Aerodynamically Loaded Structure Under Subsonic Conditions

Chen, G., Walker, K., Swanton, G. and Hill, S. (2004). An Envelope Method For Stress Analysis Of An Aerodynamically Loaded Structure Under Subsonic Conditions. In: Atrens, A., Boland, J. N., Clegg, R. and Griffiths, J. R., Structural Integrity and Fracture International Conference (SIF'04), Brisbane, Australia, (17-24). 26-29 September 2004.

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Author Chen, G.
Walker, K.
Swanton, G.
Hill, S.
Title of paper An Envelope Method For Stress Analysis Of An Aerodynamically Loaded Structure Under Subsonic Conditions
Conference name Structural Integrity and Fracture International Conference (SIF'04)
Conference location Brisbane, Australia
Conference dates 26-29 September 2004
Publication Year 2004
Sub-type Fully published paper
Editor Atrens, A.
Boland, J. N.
Clegg, R.
Griffiths, J. R.
Start page 17
End page 24
Abstract/Summary In order to understand the effect of aerodynamic intake loads on the F-111 FS496 nacelle former and surrounding intake structure, an "envelope" approach has been developed for the stress analysis of FS496 when the distributions of air pressure along the intake wall are not known. This approach assumes that the distributions of the air pressures along the wall of the intake structure are within an envelope. The envelope is defined based on three fluid dynamic theory approaches: conventional incompressible flow, conventional compressible flow, and a new pseudo-compressible flow approach. The simplified pseudo-compressible approach produced similar predictions to the more complex conventional compressible approach. The results provide boundary conditions for a future CFD model of the F-111 air intake, as well as an initial estimate of the stress on the F-111 FS496 nacelle former.
Subjects 290200 Aerospace Engineering
290201 Aerodynamics
Keyword stress analysis
F-111
aerodynamic intake load
pressure distribution
air pressure
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Collection: School of Mechanical & Mining Engineering Publications
 
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Created: Wed, 15 Dec 2004, 10:00:00 EST