SYMPOSIA PAPER Published: 01 January 1992

Three-Dimensional Elastic-Plastic Analysis of Small Circumferential Surface Cracks in Pipes Subjected to Bending Load


This study presents the elastic-plastic behavior of a circumferentially surfacecracked pipe using the finite element method based on a three-dimensional model.

The action of a pure bending load on the pipe is analyzed for three crack depths with a/t equal to 0.25, 0.5, and 0.75, and their eccentricities, a/c, being 0.2, 0.4, and 0.6, respectively.

The material obeys a Ramberg-Osgood power law. The goals are to determine the stressstrain fields and the values of J on the crack front, to define the different plastic deformation stages reached as the load on the crack is increased, and to validate the Central Electricity Generating Board (U.K.) (CEGB) two-criteria rule for circumferential surface flaws on the basis of the J results.

Author Information

Franco, C
FRAMATOME, Paris-La Defense, France
Gilles, P
FRAMATOME, Paris-La Defense, France
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Developed by Committee: E08
Pages: 183–205
DOI: 10.1520/STP23704S
ISBN-EB: 978-0-8031-5193-2
ISBN-13: 978-0-8031-1440-1