Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
766588 | Engineering Fracture Mechanics | 2015 | 16 Pages |
Abstract
An approach has been developed which is able to predict J-R curves of standard-size specimen geometries. The general idea is based on the assumption that the finite element method in combination with the cohesive model, which is based on the traction-separation relationship, is able to cover the geometrical size effects of fracture mechanics specimens. This means that cohesive zone parameters can be identified independent on geometry. For ductile crack growth a stress triaxiality dependent cohesive zone model developed by Scheider (2000) is used to cover different stress states within the specimens. The evaluation procedure is verified on steel T91.
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Authors
Michael Mahler, Jarir Aktaa,