Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2002-12-10

Journal: INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS

Included Journals: EI、SCIE、Scopus

Volume: 26

Issue: 14

Page Number: 1429-1448

ISSN: 0363-9061

Key Words: strain localization; uniqueness analysis; generalised plasticity; saturated porous medium

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 theoretical 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. Copyright (C) 2002 John Wiley Sons, Ltd.