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Fracture behaviour and stress fields of cracked bend specimens subjected to mixed mode loading

✍ Scribed by Wang Tzu Chiang; K.J. Miller

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 806 KB
Volume: 19
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(84)90095-x

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✦ Synopsis

An elasti~lastic finite element analysis of the stress fields at the tips of cracks subjected to mixed mode loading is presented. The paper concludes with a fracture analysis using several current fracture criteria and compares these theoretical results with experiment results on severat materials. The three criteria based on a linear elastic theory, i.e. maximum tensile stress, strain energy density, and maximum energy release rate do not give correct predictions for mixed mode loading. The experiment data best fits the GA theory for crack separation energy rates that accounts for plasticity e&&s. This theory gives lower and upper bound solutions respectively for the CCP and the SENB specimen con~gumtions. crack length

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