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An energy release rate criterion for mixed mode fracture

✍ Scribed by R. J. Nuismer

Publisher
Springer Netherlands
Year
1975
Tongue
English
Weight
384 KB
Volume
11
Category
Article
ISSN
1573-2673

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✦ Synopsis

The initial energy release rate for a branch crack propagating at an arbitrary angle from an existing crack tip is obtained in a simple fashion and in closed form by using a continuity assumption. It is then postulated that the branch crack propagates in the direction which causes the energy release rate to be a maximum and that initiation occurs when the value of this release rate reaches a critical value. It is shown that these postulates yield results identical to the maximum stress theory, since the direction in which the maximum circumferential stress occurs is also the direction causing the maximum energy release rate.

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