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A virtual crack-closure technique for calculating stress intensity factors for cracked three dimensional bodiesA three-dimensional virtual crack-closure technique is presented which calculates the strain energy release rates and the stress intensity factors using only nodal forces and displacements from a standard finite element analysis. The technique is an extension of the Rybicki-Kanninen (1977) method, and it assumes that any continuous function can be approximated by a finite number of straight line segments. Results obtained by the method for surface cracked plates with and without notches agree favorably with previous results.
Document ID
19880047773
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Shivakumar, K. N.
(NASA Langley Research Center Hampton, VA, United States)
Tan, P. W.
(NASA Langley Research Center Hampton, VA, United States)
Newman, J. C., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 13, 2013
Publication Date
March 1, 1988
Publication Information
Publication: International Journal of Fracture
Volume: 36
ISSN: 0376-9429
Subject Category
Structural Mechanics
Accession Number
88A35000
Distribution Limits
Public
Copyright
Other

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