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Dependence of mixed-mode crack propagation on the variation of σr and τrθ

✍ Scribed by A.C. Chrysakis

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
648 KB
Volume
24
Category
Article
ISSN
0013-7944

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✦ Synopsis

The variation of the direction or, of crack propagation in mixed mode with the angle j? of the inclined crack is shown to fit very well to the variation of @, of the bisector of the angle of directions S,, and ff,, of max o, and sufficiently well to that of @,, bisector of the angle of directions & and r3,, of min zPO < 0 and max r,@ > 0. The variation of ocr/u~, causing initiation of propagation, with B as predicted by the max og criterion, fits very well to that of a critical loading evaluated by considering the combined "opening" effect of CT, and r,@ along the circumference of a small circle centered at the crack tip. The above results may be used as criteria of mixed-mode fracture based on r~, and r&,.

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