EFFECT OF STRESS-INDUCED ANISOTROPY ON A MODEL OF BRITTLE ROCK FAILURE AS LOCALIZATION OF DEFORMATION.

John W. Rudnicki*

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In the axisymmetric compression test, rock samples, even those which are isotropic when unstressed, develop a transversely isotropic structure after a small amount of inelastic deformation due to the preferential growth of microcracks in the axial direction. To examine the effect of this developed anisotropy on faulting, conditions for the localization of deformation are derived for the most general form of stress strain relation for a material exhibiting transversely isotropic incremental response. This constitutive law involves six indepenent, incremental moduli. Expressions are derived for the predicted slope of the axial stress vs. axial strain curve at faulting and for the predicted fracture angle.

Original languageEnglish (US)
Journal[No source information available]
Volume1
StatePublished - Jan 1 2017

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Faulting
Anisotropy
Rocks
Microcracks
Compaction

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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abstract = "In the axisymmetric compression test, rock samples, even those which are isotropic when unstressed, develop a transversely isotropic structure after a small amount of inelastic deformation due to the preferential growth of microcracks in the axial direction. To examine the effect of this developed anisotropy on faulting, conditions for the localization of deformation are derived for the most general form of stress strain relation for a material exhibiting transversely isotropic incremental response. This constitutive law involves six indepenent, incremental moduli. Expressions are derived for the predicted slope of the axial stress vs. axial strain curve at faulting and for the predicted fracture angle.",
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