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A rate‐type constitutive model for soil with a critical state
Author(s) -
Davis R. O.,
Mullenger G.
Publication year - 1978
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/nag.1610020306
Subject(s) - constitutive equation , critical state soil mechanics , deformation (meteorology) , isotropy , stress space , compression (physics) , strain rate , geotechnical engineering , stress (linguistics) , representation (politics) , cauchy elastic material , mathematics , materials science , structural engineering , geology , finite element method , engineering , physics , composite material , optics , linguistics , philosophy , politics , political science , law
A continuum representation for soil which incorporates the concepts of hypoelasticity and critical state theory is proposed. General, three‐dimensional constitutive equations are formulated to relate specific volume, stress, rate of deformation and rate of change of stress, resulting in a mathematical material model which exhibits phenomenological features typical of soil response. The general constitutive equations are specialized to represent the particular cases of isotropic compression, constant, volume deformation, uniaxial compression and biaxial deformation. Methods are suggested for determining the model parameters to represent a specific soil using conventional triaxial test data. Comparisons of stress‐strain response with published experimental data are shown.