✦ LIBER ✦

On Cauchy singular integrals and stress intensity factors for 2D mode I cracks in an infinite solid

✍ Scribed by T.A. Khraishi; I. Demir

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 166 KB
Volume: 30
Category: Article
ISSN: 0093-6413
DOI: 10.1016/s0093-6413(03)00032-6

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✦ Synopsis

This paper comments on some of the different numerical techniques commonly employed in evaluating Cauchy singular integrals of the first kind; e.g. as pertaining to 2D through cracks in a brittle material undergoing Mode I loading. In addition, a different more direct method is proposed here. Also, two different ways to calculate the stress intensity factor (K I ) are contrasted. The accuracy attained by the different methods in calculating K I , and the factors affecting the calculation, are compared. Finally, comments on calculating the stress field of a 2D crack and important considerations are presented.

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Comments on the paper by R. C. Shah and

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It should be interesting to compare the Shah and Kobayashi estimate of K~ for a semielliptical surface crack in a finite thickness plate with the Kz for an edge crack in a finite plate, which corresponds to the surface crack KI for b/a -, O. The Shah and Kobayashi estimate of K l (Fig. 9 of their pa