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Erschienen in:
1993 | OriginalPaper | Buchkapitel
Strain Energy Density Failure Criterion: Mixed-Mode Crack Growth
verfasst von : Emmanuel E. Gdoutos
Erschienen in: Fracture Mechanics
Verlag: Springer Netherlands
Enthalten in: Professional Book Archive
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So far, we have studied growth of a crack only for the case when the load is applied normal to the crack and such that the crack propagates in a self-similar manner. However, often the loads are not aligned to the orientation of the crack. In such cases, the crack-tip stress field is no longer governed by a single opening-mode stress intensity factor KI but by a combination of the three stress intensity factors KI, KII, and KIII. Moreover, the direction of crack initiation is not known a priori but depends on a failure criterion involving some combination of KI, KII, and KIII. As a rule the crack follows a curved path.