Buckling of a near-surface parallel crack using the beam approximation

Sanchai Mitaim, Emmanual Detoumay, Joseph Labuz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper is concerned with the determination of the far-field compressive buckling stress of a near-surface parallel crack, in the limiting case when the.crack is situated close to the free surface In other words, we restrict consideration to the practical case h/l < < 1, where I is the crack half-length and h is the distance between the crack and boundary The problem is simplified as the layer between the crack and the free surface can then be treated as a beam under given loads. For the case h/l < < 1, the critical buckling stress takes a very simple asymptotic form. As buckling is taking place, the crack starts to open asymmetrically, thus causing an increase of both mode I and mode II stress intensity factors Both K1 and K11 can be expressed in term of forces and moment at the crack tips. The stress intensity factors in the post-buckling regime can be calculated using a nonlinear analysis.

Original languageEnglish (US)
Title of host publication4th North American Rock Mechanics Symposium, NARMS 2000
PublisherAmerican Rock Mechanics Association (ARMA)
Pages747-753
Number of pages7
ISBN (Print)9058091554, 9789058091550
StatePublished - 2000
Event4th North American Rock Mechanics Symposium, NARMS 2000 - Seattle, United States
Duration: Jul 31 2000Aug 3 2000

Publication series

Name4th North American Rock Mechanics Symposium, NARMS 2000

Other

Other4th North American Rock Mechanics Symposium, NARMS 2000
Country/TerritoryUnited States
CitySeattle
Period7/31/008/3/00

Bibliographical note

Publisher Copyright:
© 2000 Balkema, Rotterdam.

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