Shear-band formation in sandstone

J. Sulem, A. Ord, I. Vardoulakis

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Experimental results from biaxial (plane-strain) deformation of a sandstone demonstrate formation of a shear-band within the hardening regime. Evaluation of the plastic hardening modulus at initiation of the shear-band is made on the basis of the measured stress-strain data and is compared with the results of a bifurcation analysis. This modulus is greater than the critical hardening modulus derived from a Mohr-Coulomb type yield criterion as well as greater than that derived from a Drucker-Prager type yield criterion. A coupled flow/damage theory for friction and dilatant materials is therefore investigated for description of this behaviour. The model predicts a slight increase with increasing confining pressure of the angle that the shear band makes with the maximum principal axis of compressive stress. -from Authors

Original languageEnglish
Pages (from-to)1731-1735
Number of pages5
JournalComputer methods and advances in geomechanics
Publication statusPublished - 1 Jan 1992
Externally publishedYes

Fingerprint

shear band
hardening
sandstone
plane strain
bifurcation
confining pressure
friction
plastic
damage

Cite this

Sulem, J. ; Ord, A. ; Vardoulakis, I. / Shear-band formation in sandstone. In: Computer methods and advances in geomechanics. 1992 ; pp. 1731-1735.
@article{7d70ac72b0f04c8b9688992a7e8f9c49,
title = "Shear-band formation in sandstone",
abstract = "Experimental results from biaxial (plane-strain) deformation of a sandstone demonstrate formation of a shear-band within the hardening regime. Evaluation of the plastic hardening modulus at initiation of the shear-band is made on the basis of the measured stress-strain data and is compared with the results of a bifurcation analysis. This modulus is greater than the critical hardening modulus derived from a Mohr-Coulomb type yield criterion as well as greater than that derived from a Drucker-Prager type yield criterion. A coupled flow/damage theory for friction and dilatant materials is therefore investigated for description of this behaviour. The model predicts a slight increase with increasing confining pressure of the angle that the shear band makes with the maximum principal axis of compressive stress. -from Authors",
author = "J. Sulem and A. Ord and I. Vardoulakis",
year = "1992",
month = "1",
day = "1",
language = "English",
pages = "1731--1735",
journal = "Computer methods and advances in geomechanics",

}

Shear-band formation in sandstone. / Sulem, J.; Ord, A.; Vardoulakis, I.

In: Computer methods and advances in geomechanics, 01.01.1992, p. 1731-1735.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Shear-band formation in sandstone

AU - Sulem, J.

AU - Ord, A.

AU - Vardoulakis, I.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - Experimental results from biaxial (plane-strain) deformation of a sandstone demonstrate formation of a shear-band within the hardening regime. Evaluation of the plastic hardening modulus at initiation of the shear-band is made on the basis of the measured stress-strain data and is compared with the results of a bifurcation analysis. This modulus is greater than the critical hardening modulus derived from a Mohr-Coulomb type yield criterion as well as greater than that derived from a Drucker-Prager type yield criterion. A coupled flow/damage theory for friction and dilatant materials is therefore investigated for description of this behaviour. The model predicts a slight increase with increasing confining pressure of the angle that the shear band makes with the maximum principal axis of compressive stress. -from Authors

AB - Experimental results from biaxial (plane-strain) deformation of a sandstone demonstrate formation of a shear-band within the hardening regime. Evaluation of the plastic hardening modulus at initiation of the shear-band is made on the basis of the measured stress-strain data and is compared with the results of a bifurcation analysis. This modulus is greater than the critical hardening modulus derived from a Mohr-Coulomb type yield criterion as well as greater than that derived from a Drucker-Prager type yield criterion. A coupled flow/damage theory for friction and dilatant materials is therefore investigated for description of this behaviour. The model predicts a slight increase with increasing confining pressure of the angle that the shear band makes with the maximum principal axis of compressive stress. -from Authors

UR - http://www.scopus.com/inward/record.url?scp=0026494687&partnerID=8YFLogxK

M3 - Article

SP - 1731

EP - 1735

JO - Computer methods and advances in geomechanics

JF - Computer methods and advances in geomechanics

ER -