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Creep behaviour of a stationary, semicircular surface crack

✍ Scribed by S.D. Smith; J.J. Webster; T.H. Hyde

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
922 KB
Volume
30
Category
Article
ISSN
0013-7944

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✦ Synopsis

semicircular surface crack loaded in mode I tension with a material model similar to 316s~ at 600Β°C has been simulated using the finite element method. The behaviour of the crack upon initial loading, during the following creep transient and in the stationary state has been investigated. The distribution of the stationary state C* contour integral is used to predict the distribution of creep crack growth rates expected for this geometry and deformation mode. A second prediction which includes the influence of stress state upon the creep crack growth law is obtained. Methods of estimating the C* contour integral for a three dimensional geometry are assessed.

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