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Reporting Recommended Patch Density from Vehicle Panel Vibration Convergence Studies using both DAF and TBL Fits of the Spatial Correlation FunctionUsing the patch method to represent the continuous spatial correlation function of a phased pressure field over a structural surface is an approximation. The approximation approaches the continuous function as patches become smaller. Plotting comparisons of the approximation vs the continuous function may provide insight revealing: (1) For what patch size/density should the approximation be very good? (2) What the approximation looks like when it begins to break down? (3) What the approximation looks like when the patch size is grossly too large. Following these observations with a convergence study using one FEM may allow us to see the importance of patch density. We may develop insights that help us to predict sufficient patch density to provide adequate convergence for the intended purpose frequency range of interest
Document ID
20120015488
Document Type
Presentation
Authors
Smith, Andrew M.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Davis, Robert Ben
(NASA Marshall Space Flight Center Huntsville, AL, United States)
LaVerde, Bruce T.
(Engineering Research and Consulting, Inc. Huntsville, AL, United States)
Jones, Douglas C.
(Jacobs Engineering Group, Inc. Huntsville, AL, United States)
Band, Jonathon L.
(Jacobs Engineering Group, Inc. Huntsville, AL, United States)
Date Acquired
August 26, 2013
Publication Date
June 19, 2012
Subject Category
Acoustics
Report/Patent Number
M12-1883
Meeting Information
Meeting: Spacecraft and Launch Vehicle Dynamics Environments Workshop
Location: El Segundo, CA
Country: United States
Start Date: June 19, 2012
End Date: June 21, 2012
Distribution Limits
Public
Copyright
Public Use Permitted.
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