Journal
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
Volume 23, Issue 9, Pages 795-803Publisher
BLACKWELL SCIENCE LTD
DOI: 10.1046/j.1460-2695.2000.00264.x
Keywords
U-notches; cohesive crack; size effects; fracture mechanics; PMMA; cracking criterion
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A procedure is proposed to evaluate the mechanical response (i.e. peak loads and load-displacement) of a notched component. A cracking criterion is given, applicable to quasi-brittle materials under monotonic loading. This procedure is based on a cohesive zone-crack model. Numerical predictions are in good agreement with a large experimental programme in which PMMA specimens of different shapes and sizes including U-notch radius and U-notch depth were tested. All experimental results are reported. The paper closes with a discussion of the proposed cracking criteria and some proposals for future work.
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