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Free-vibration characteristics and correlation of a Space Station split-blanket solar arrayTwo methods for studying the free-vibration characteristics of a large split-blanket solar array in a zero-g cantilevered configuration are presented. The zero-g configuration corresponds to an on-orbit configuration of the Space Station solar array. The first method applies the equations of continuum mechanics to determine the natural frequencies of the array; the second uses the finite element method program, MSC/NASTRAN. The stiffness matrix from the NASTRAN solution was found to be erroneously grounded. The results from the two methods are compared. It is concluded that the grounding does not seriously compromise the solution to the elastic modes of the solar array. However, the correct rigid body modes need to be icluded to obtain the correct dynamic model.
Document ID
19890043366
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Carney, Kelly S.
(NASA Lewis Research Center Cleveland, OH, United States)
Shaker, Francis J.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
AIAA PAPER 89-1252
Meeting Information
Meeting: AIAA, ASME, ASCE, AHS, and ASC, Structures, Structural Dynamics and Materials Conference
Location: Mobile, AL
Country: United States
Start Date: April 3, 1989
End Date: April 5, 1989
Accession Number
89A30737
Distribution Limits
Public
Copyright
Other

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