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Stress intensity and crack opening of compact tension specimens

✍ Scribed by Jan Bäcklund; Jaroslav Mackerle

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
348 KB
Volume
12
Category
Article
ISSN
0013-7944

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✦ Synopsis

Accurate finite element analyses of compact tension specimens have been performed giving stress intensity factors slightly above those of existing analytical solutions. Crack mouth openings are also grven. Simple formulae for both stress intensity and crack opening yielding errors within a couple of per cent of the numerical results are presented.

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✍ Hai-Ping Hu; Wen-An Cai; Si-Kui Yu 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 99 KB

A circular element centered at the crack tip is constructed. According to the first four terms of Williams stress function, the displacement pattern with singularity is given to the circular element, where unknown parameters are considered as generalized nodal displacements. On the interface between