Analytical and numerical investigation of uniqueness and localization in saturated porous media

H. W. Zhang; B. A. Schrefler

doi:10.1002/nag.252

Analytical and numerical investigation of uniqueness and localization in saturated porous media

H. W. Zhang, B. A. Schrefler

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

This paper presents first the applications of uniqueness and strain localization analysis of saturated porous media, where localization of deformation into well defined narrow zones in a saturated porous medium is studied in terms of discontinuous bifurcation theory. A generalized plasticity constitutive model and a Mohr-Coulomb model are used in both the theoritical and numerical analyses of shear band formations. The critical hardening moduli and shear band angle for localization are computed, and quantitative results are given for both constitutive models. Numerical results previously obtained and new ones are confirmed by this analytical and numerical investigation.

Original language	English (US)
Pages (from-to)	1429-1448
Number of pages	20
Journal	International Journal for Numerical and Analytical Methods in Geomechanics
Volume	26
Issue number	14
DOIs	https://doi.org/10.1002/nag.252
State	Published - Dec 10 2002

Keywords

Generalised plasticity
Saturated porous medium
Strain localization
Uniqueness analysis

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Materials Science(all)
Mechanics of Materials
Computational Mechanics

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10.1002/nag.252

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abstract = "This paper presents first the applications of uniqueness and strain localization analysis of saturated porous media, where localization of deformation into well defined narrow zones in a saturated porous medium is studied in terms of discontinuous bifurcation theory. A generalized plasticity constitutive model and a Mohr-Coulomb model are used in both the theoritical and numerical analyses of shear band formations. The critical hardening moduli and shear band angle for localization are computed, and quantitative results are given for both constitutive models. Numerical results previously obtained and new ones are confirmed by this analytical and numerical investigation.",

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T1 - Analytical and numerical investigation of uniqueness and localization in saturated porous media

AU - Zhang, H. W.

AU - Schrefler, B. A.

PY - 2002/12/10

Y1 - 2002/12/10

N2 - This paper presents first the applications of uniqueness and strain localization analysis of saturated porous media, where localization of deformation into well defined narrow zones in a saturated porous medium is studied in terms of discontinuous bifurcation theory. A generalized plasticity constitutive model and a Mohr-Coulomb model are used in both the theoritical and numerical analyses of shear band formations. The critical hardening moduli and shear band angle for localization are computed, and quantitative results are given for both constitutive models. Numerical results previously obtained and new ones are confirmed by this analytical and numerical investigation.

AB - This paper presents first the applications of uniqueness and strain localization analysis of saturated porous media, where localization of deformation into well defined narrow zones in a saturated porous medium is studied in terms of discontinuous bifurcation theory. A generalized plasticity constitutive model and a Mohr-Coulomb model are used in both the theoritical and numerical analyses of shear band formations. The critical hardening moduli and shear band angle for localization are computed, and quantitative results are given for both constitutive models. Numerical results previously obtained and new ones are confirmed by this analytical and numerical investigation.

KW - Generalised plasticity

KW - Saturated porous medium

KW - Strain localization

KW - Uniqueness analysis

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JF - International Journal for Numerical and Analytical Methods in Geomechanics

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Analytical and numerical investigation of uniqueness and localization in saturated porous media

Abstract

Keywords

ASJC Scopus subject areas

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