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Vibration and stress analysis of soft-bonded shuttle insulation tiles. Modal analysis with compact widely space stringersAn efficient iterative procedure is described for the vibration and modal stress analysis of reusable surface insulation (RSI) of multi-tiled space shuttle panels. The method, which is quite general, is rapidly convergent and highly useful for this application. A user-oriented computer program based upon this procedure and titled RESIST (REusable Surface Insulation Stresses) has been prepared for the analysis of compact, widely spaced, stringer-stiffened panels. RESIST, which uses finite element methods, obtains three dimensional tile stresses in the isolator, arrestor (if any) and RSI materials. Two dimensional stresses are obtained in the tile coating and the stringer-stiffened primary structure plate. A special feature of the program is that all the usual detailed finite element grid data is generated internally from a minimum of input data. The program can accommodate tile idealizations with up to 850 nodes (2550 degrees-of-freedom) and primary structure idealizations with a maximum of 10,000 degrees-of-freedom. The primary structure vibration capability is achieved through the development of a new rapid eigenvalue program named ALARM (Automatic LArge Reduction of Matrices to tridiagonal form).
Document ID
19750005239
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Ojalvo, I. U. (Grumman Aerospace Corp. Bethpage, NY, United States)
Austin, F. (Grumman Aerospace Corp. Bethpage, NY, United States)
Levy, A. (Grumman Aerospace Corp. Bethpage, NY, United States)
Date Acquired
September 3, 2013
Publication Date
September 1, 1974
Subject Category
Structural Mechanics
Report/Patent Number
NASA-CR-132553
Accession Number
75N13311
Funding Number(s)
CONTRACT_GRANT: NAS1-10635
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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