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Validation of Measured Damping Trends for Flight-Like Vehicle Panel/Equipment including a Range of Cable Harness AssembliesThis validation study examines the effect on vibroacoustic response resulting from the installation of cable bundles on a curved orthogrid panel. Of interest is the level of damping provided by the installation of the cable bundles and whether this damping could be potentially leveraged in launch vehicle design. The results of this test are compared with baseline acoustic response tests without cables. Damping estimates from the measured response data are made using a new software tool that leverages a finite element model of the panel in conjunction with advanced optimization techniques. While the full test series is not yet complete, the first configuration of cable bundles that was assessed effectively increased the viscous critical damping fraction of the system by as much as 0.02 in certain frequency ranges.
Document ID
20120014464
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Smith, Andrew M. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Davis, R. Benjamin (NASA Marshall Space Flight Center Huntsville, AL, United States)
LaVerde, Bruce T. (Engineering Research and Consulting, Inc. Huntsville, AL, United States)
Fulcher, Clay W. (Jacobs Engineering Group, Inc. Huntsville, AL, United States)
Jones, Douglas C. (Jacobs Engineering Group, Inc. Huntsville, AL, United States)
Waldon, James M. (Jacobs Engineering Group, Inc. Huntsville, AL, United States)
Craigmyle, Benjamin B. (Jacobs Engineering Group, Inc. Huntsville, AL, United States)
Date Acquired
August 26, 2013
Publication Date
April 23, 2012
Subject Category
Launch Vehicles And Launch Operations
Report/Patent Number
M12-1663
M11-0878
Meeting Information
Meeting: 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012
Start Date: April 23, 1012
End Date: April 26, 1012
Sponsors: American Inst. of Aeronautics and Astronautics, American Helicopter Society, Inc., American Society for Composites, American Society of Civil Engineers, American Society of Mechanical Engineers
Distribution Limits
Public
Copyright
Public Use Permitted.

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