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Finite element computer program to analyze cracked orthotropic sheetsA two dimensional orthotropic sheet with through-the-thickness cracks and temperature gradient was analyzed. The program includes special crack tip elements that account for singular stress fields associated with crack opening and crack sliding displacements at the crack tip. The program also includes a linear spring element and a constant strain, triangular element. A number of problems for which closed form solutions exist were analyzed to demonstrate the capabilities of the program.
Document ID
19760020511
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Chu, C. S. (Lockheed-Georgia Co. Marietta, GA, United States)
Anderson, J. M. (Lockheed-Georgia Co. Marietta, GA, United States)
Batdorf, W. J. (Lockheed-Georgia Co. Marietta, GA, United States)
Aberson, J. A. (Lockheed-Georgia Co. Marietta, GA, United States)
Date Acquired
September 3, 2013
Publication Date
July 1, 1976
Subject Category
Structural Mechanics
Report/Patent Number
NASA-CR-2698
Accession Number
76N27599
Funding Number(s)
PROJECT: RTOP 743-01-11-02
CONTRACT_GRANT: NAS1-13605
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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