Failure of rock under tensile-compressive loading

J. D. Sharpe, J. F. Labuz

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

1 Scopus citations


Failure data from compression and extension testing of Dunnville sandstone and Webatuck dolomite were analyzed using three different criteria: Mohr-Coulomb, Hoek-Brown, and Paul-Mohr-Coulomb. An emphasis was placed on the details of the failure criteria under tensile-compressive loading conditions, which was possible due to a dog-bone specimen geometry. Tension cut-offs were implemented when using Mohr-Coulomb and Paul-Mohr-Coulomb due to unrealistic predictions of (theoretical) tensile strength. It was determined that under tensile-compressive loading conditions, a tension cut-off provided a better match than Hoek-Brown to the data for the two rock types examined. Hoek-Brown overestimates the uniaxial tensile strength by a factor between 2-3 and has the greatest overall least absolute residual error in the low mean stress region.

Original languageEnglish (US)
Title of host publication51st US Rock Mechanics / Geomechanics Symposium 2017
PublisherAmerican Rock Mechanics Association (ARMA)
Number of pages6
ISBN (Electronic)9781510857582
StatePublished - 2017
Event51st US Rock Mechanics / Geomechanics Symposium 2017 - San Francisco, United States
Duration: Jun 25 2017Jun 28 2017

Publication series

Name51st US Rock Mechanics / Geomechanics Symposium 2017


Other51st US Rock Mechanics / Geomechanics Symposium 2017
Country/TerritoryUnited States
CitySan Francisco

Bibliographical note

Publisher Copyright:
© 2017 ARMA, American Rock Mechanics Association.


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