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Variation of crack-opening stresses in three-dimensions - Finite thickness plateA 3D elastic-plastic finite-element analysis is conducted to study crack-growth behavior of thin and thick center-cracked specimens under constant-amplitude loading conditions. The numerical analysis and the specimen configuration and loading are described for both the thin and thick conditions. Stabilized crack-opening stresses of interior and exterior regions are given as are the closure and opening profiles of the crack-surface plane after the tenth cycle. The effect of thickness is discussed with respect to the crack-opening stress levels and the plastic zones of the interior and exterior regions. A load-reduced-displacement technique allows the calculation of the crack-opening stresses at three locations on the crack surface plane. The constraint effect related to thickness gives a lower stabilized crack-opening stress level for the thick specimens.
Document ID
19910068752
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Chermahini, R. G.
(Aeronautical Research Inst. of Sweden Bromma., United States)
Blom, A. F.
(Aeronautical Research Institute of Sweden Bromma, United States)
Date Acquired
August 14, 2013
Publication Date
August 1, 1991
Publication Information
Publication: Theoretical and Applied Fracture Mechanics
Volume: 15
ISSN: 0167-8442
Subject Category
Structural Mechanics
Accession Number
91A53375
Funding Number(s)
CONTRACT_GRANT: NAG1-529
Distribution Limits
Public
Copyright
Other

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