A finite element calculation of stress intensity factors by a modified crack closure integral

Published on Jan 1, 1977in Engineering Fracture Mechanics3.426
· DOI :10.1016/0013-7944(77)90013-3
EF Rybicki3
Estimated H-index: 3
(Battelle Memorial Institute),
M. F. Kanninen18
Estimated H-index: 18
(Battelle Memorial Institute)
Abstract An efficient technique for evaluating stress intensity factors is presented. The method, based on the crack closure integral, can be used with a constant strain finite element stress analysis and a coarse grid. The technique also permits evaluation of both Mode I and Mode II stress intensity factors from the results of a single analysis. Example computations are performed for a double cantilever beam test specimen, a finite width strip with a central crack, and a pin loaded circular hole with radial cracks. Close agreement between numerical results given by this approach and reference solutions were found in all cases.
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