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Stress–strain model for clays with anisotropic void ratio distribution
Author(s) -
Masad Eyad,
Muhunthan Balasingam,
Chameau Jean Lou
Publication year - 1998
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/(sici)1096-9853(199805)22:5<393::aid-nag922>3.0.co;2-w
Subject(s) - void ratio , soil water , geotechnical engineering , critical state soil mechanics , porosity , void (composites) , dissipation , plasticity , strain energy , stress–strain curve , anisotropy , soil mechanics , materials science , mechanics , geology , constitutive equation , structural engineering , deformation (meteorology) , engineering , composite material , finite element method , soil science , thermodynamics , physics , quantum mechanics
Abstract The porosity of soils is considered to be a directional measure and its distribution is characterized by a functional form. This form has been used to extend the critical state soil mechanics framework to include the effects of structure in soils. A new internal plastic energy dissipation formulation has been proposed to account for fabric arrangement. New expressions for the yield locus, and the plastic stress–strain response of structural soils have been derived. The applicability of the concepts to model the plastic stress–strain behaviour of a number of soils is illustrated. The advantage of the new model is very well identified in modelling the stress–strain behaviour of K 0 consolidated and natural clays. © 1998 John Wiley & Sons, Ltd.