SYMPOSIA PAPER Published: 01 January 1979
STP35855S

Elastic-Plastic Fracture Mechanics Analyses of Notches

Source

Fatigue failures invariably start at a surface notch. Crack initiation is due to plasticity while crack propagation can continue in an elastically stressed material due to the crack generating its own crack tip plasticity.

From elastic-plastic analyses, it is possible to predict the effect of notch plasticity on the behavior of short propagating cracks. Elastic-plastic finite-element analysis solutions to cracks in notch fields indicate that a crack will initially propagate at a decreasing rate until the crack can generate a crack tip plasticity that is greater than the elastic threshold stress intensity condition.

Author Information

Hammouda, MM
Faculty of Engineering, University of Sheffield, Sheffield, U.K.
Miller, KJ
Faculty of Engineering, University of Sheffield, Sheffield, U.K.
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Details
Developed by Committee: E08
Pages: 703–719
DOI: 10.1520/STP35855S
ISBN-EB: 978-0-8031-4739-3
ISBN-13: 978-0-8031-0330-6