Localization in plane strain compression of fluid-saturated rock

Roman Y. Makhnenko, Joseph F. Labuz

Research output: Contribution to journalConference article

Abstract

Localization in terms of a bifurcation from a homogeneous pattern of deformation is predicted to be different if the boundary conditions are drained or undrained. This phenomenon is evaluated in plane strain compression experiments with water-saturated Berea sandstone, where corresponding poroelastic and inelastic properties were measured. Non-uniformity of lateral deformation and clustering of acoustic emission events were used as the experimental evidence of localization, which occurred soon after the peak stress in both drained and undrained cases. These observations are in reasonable agreement with an analysis that predicted negative values of the critical hardening modulus (localization post-peak) for fluid-saturated sandstone under plane strain loading conditions.

Original languageEnglish (US)
Pages (from-to)33-38
Number of pages6
JournalSpringer Series in Geomechanics and Geoengineering
Issue number191289
DOIs
StatePublished - Jan 1 2017
Event11th International Workshop on Bifurcation and Degradation in Geomaterials, IWBDG 2017 - Limassol, Cyprus
Duration: May 21 2017May 25 2017

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