Straight or curved initiation cracks at a V-notch tip under mixed-mode loading?
Source abstract
Abstract
The assumption of a straight crack path is generally made when studying crack initiation at V-notch tips under mixed-mode loading using the Coupled Criterion (CC). This work investigates whether the optimal initiation configuration could rather consist of curved cracks instead of straight ones. Curved crack initiation is studied through the Matched Asymptotic approach of the CC. It is found that slightly curved cracks may be optimal depending on the mode mixity and the material properties. The initiation loading corresponding to curved crack initiation remains close to the one obtained for straight cracks. The loading magnitude and crack initiation angle predicted using the CC well represent the ones obtained experimentally on V-notched Arcan specimens.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Numerical methods in engineering · Fatigue and fracture mechanics · Structural Health Monitoring Techniques
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References (47)
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