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Structural Engineering and Mechanics Volume 26, Number 1, May10 2007 , pages 87-97 DOI: https://doi.org/10.12989/sem.2007.26.1.087 |
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An elliptical fracture criterion for mixed mode fracture I+II emanating from notches |
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H. El Minor, G. Pluvinage and Z. Azari
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| Abstract | ||
| Some mixed mode fracture criterion may be converted in to elliptical or ellipsoidal formula with the aid of mathematical translation. Hence, the crack initiation in mixed mode fracture I+II emanating from notches, has been studied using notched circular ring specimens. On the basis of Irwin (1957) theory, a new criteria in mixed mode fracture I+II, based fracture elliptic criterion and notch stress intensity factors has been developed. | ||
| Key Words | ||
| notch effect; angled crack problem; maximum tangential stress criterion; effective tangential stress; effective tangential distance; relative tangential stress gradient; weight function; notch stress intensity factors KI? and KII?. | ||
| Address | ||
| H. El Minor: Laboratoire d?Energie, Ressources Naturelles et Modelisation, Faculte Polydisciplinaire de Taza_Universite Sidi Mohemed Ben Abdelah Fes, Morocco G. Pluvinage: Universite de Metz, Laboratoire de Fiabilite Mecanique, Ile du Saulcy Metz 57045, France Z. Azari: Universite de Picardie Jules Verne, Faculte de Mathematiques et d\'Informatique, 33 rue Saint-Leu, 80039 Amiens, France | ||