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Associated and non‐associated constitutive relations for undrained behaviour of isotropic soft clays
Author(s) -
Banerjee P. K.,
Stipho A. S.
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.1610020104
Subject(s) - isotropy , plasticity , pore water pressure , geotechnical engineering , constitutive equation , triaxial shear test , critical state soil mechanics , stress (linguistics) , stress–strain curve , materials science , geology , structural engineering , deformation (meteorology) , engineering , composite material , finite element method , shear (geology) , physics , linguistics , philosophy , quantum mechanics
Incremental theory of plasticity has been used to derive associated and non‐associated stress–strain relations for analysing the undrained stress‐strain response of isotropic normally and lightly overconsolidated clays. A series of comparisons between the theoretical stress‐strain‐pore pressure response and laboratory test results for 3 in. × 6 in. samples of very high degree of repeatability and reproduceability have been described. From these comparisons it can be seen that both the associated and, non‐associated Cam clay models appear to give consistently the best correlations between the theoretical results and the experimental observations.