NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A theory for the fracture of thin plates subjected to bending and twisting momentsStress fields near the tip of a through crack in an elastic plate under bending and twisting moments are reviewed assuming both Kirchhoff and Reissner plate theories. The crack tip displacement and rotation fields based on the Reissner theory are calculated. These results are used to calculate the J-integral (energy release rate) for both Kirchhoff and Reissner plate theories. Invoking Simmonds and Duva's (1981) result that the value of the J-integral based on either theory is the same for thin plates, a universal relationship between the Kirchhoff theory stress intensity factors and the Reissner theory stress intensity factors is obtained for thin plates. Calculation of Kirchhoff theory stress intensity factors from finite elements based on energy release rate is illustrated. It is proposed that, for thin plates, fracture toughness and crack growth rates be correlated with the Kirchhoff theory stress intensity factors.
Document ID
19940035308
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hui, C. Y.
(NASA Langley Research Center Hampton, VA, United States)
Zehnder, Alan T.
(Cornell Univ. Ithaca, NY, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1993
Publication Information
Publication: International Journal of Fracture
Volume: 61
Issue: 3
ISSN: 0376-9429
Subject Category
Structural Mechanics
Accession Number
94A11963
Funding Number(s)
CONTRACT_GRANT: NAG1-1311
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available