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Improved method for calculating strain energy release rate based on beam theoryThe Timoshenko beam theory was used to model cracked beams and to calculate the total strain-energy release rate. The root rotations of the beam segments at the crack tip were estimated based on an approximate two-dimensional elasticity solution. By including the strain energy released due to the root rotations of the beams during crack extension, the strain-energy release rate obtained using beam theory agrees very well with the two-dimensional finite element solution. Numerical examples were given for various beam geometries and loading conditions. Comparisons with existing beam models were also given.
Document ID
19950055991
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sun, C. T.
(Purdue Univ. West Lafayette, IN, United States)
Pandey, R. K.
(Purdue Univ. West Lafayette, IN, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1994
Publication Information
Publication: AIAA Journal
Volume: 32
Issue: 1
ISSN: 0001-1452
Subject Category
Structural Mechanics
Accession Number
95A87590
Funding Number(s)
CONTRACT_GRANT: NAG1-1323
Distribution Limits
Public
Copyright
Other

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