✦ LIBER ✦

Stress singularities at crack corners

✍ Scribed by L. Xu; T. Kundu

Publisher: Springer Netherlands
Year: 1995
Tongue: English
Weight: 488 KB
Volume: 39
Category: Article
ISSN: 0374-3535
DOI: 10.1007/bf00042438

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✦ Synopsis

In this paper the stress and displacement fields near an embedded crack comer in a linear elastic medium are analytically computed. The conical-spherical coordinate system is introduced to solve this problem. It is observed that the strength of the stress singularity depends on the angle of the crack comer. The singularity becomes weaker, varying from r-' to r °, as the angle of the crack comer varies from 360 ° to 0 °. Both symmetric and skew-symmetric loadings give the same variation of the behavior of the stress singularity. It is also found that the order of the singularity is independent of the Poisson's ratio, unlike the comer cracks at a free surface where Poisson's ratio affects the results.

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