NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Three-dimensional elastic-plastic analysis of shallow cracks in single-edge-crack-tension specimensThree-dimensional, elastic-plastic, finite-element results are presented for single-edge crack-tension specimens with several shallow crack-length-to-width ratios (0.05 less than or equal to a/W less than or equal to 0.5). Results showed the need to model the initial yield plateau in the stress-strain behavior to accurately model deformation of the A36 steel specimens. The crack-tip-opening-displacement was found to be linearly proportional to the crack-mouth-opening displacement. A new deformation dependent plastic-eta factor equation is presented for calculating the J-integral from test load-displacement records. This equation was shown to be accurate for all crack lengths considered.
Document ID
19920042913
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shivakumar, Kunigal N.
(Analytical Services and Materials, Inc. Hampton, VA, United States)
Newman, James C., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
Structural Mechanics
Meeting Information
Meeting: International Conference on the Numerical Methods in Fracture Mechanics
Location: Freiburg im Breisgau
Country: Germany
Start Date: April 23, 1990
End Date: April 27, 1990
Accession Number
92A25537
Distribution Limits
Public
Copyright
Other

Available Downloads

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