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Large stress reversals in true triaxial tests on cross‐anisotropic sand
Author(s) -
Yamamuro Jerry A.,
Lade Poul V.
Publication year - 2009
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.752
Subject(s) - anisotropy , kinematics , geotechnical engineering , hardening (computing) , geology , plane stress , mechanics , stress (linguistics) , triaxial shear test , strain hardening exponent , stress path , geometry , structural engineering , mathematics , materials science , physics , engineering , classical mechanics , finite element method , composite material , optics , linguistics , philosophy , layer (electronics) , petrology , shear (geology)
The results of a series of true triaxial tests with stress paths involving large reversals under 3D conditions are presented. These tests were performed on medium dense Santa Monica Beach sand to provide experimental evidence for the rotational kinematic hardening hypothesis presented in a companion paper and to provide stress–strain and volume change relations for experiments with 3D stress paths and large stress reversals to be predicted by the rotational kinematic hardening model. The experimental equipment and the testing procedures are briefly explained followed by a presentation of the experimental results and their sensitivity to unknown causes as well as effects of cross‐anisotropy on the sand behavior. The stress paths are presented in a σ 3 ′‐plane and in an octahedral plane and the directions of experimental strain increment vectors are compared with those obtained from the rotational kinematic hardening model. Copyright © 2008 John Wiley & Sons, Ltd.