An anisotropic elasto-plastic constitutive model is presented in triaxial and general stress space in order to evaluate the stress-strain behaviour of anisotropically consolidated sands over a wide stress region for static loading conditions. The fundamental concept presented herein is based on the assumption that sands exhibit anisotropic hardening property depending on both plastic volumetric and shear strains. The model presented consists of a yield function, a plastic potential and a hardening modulus, which are formulated based on a few basic assumptions and experimental evidence. The model contains ten or eleven experimental parameters which are not only determined from a few conventional triaxial tests but also have a clear physical meaning. The predicted behaviour for drained and undrained triaxial and hollow cylindrical tests is compared with available experimental data. It is shown that the model accurately represents the changes in stress-strain behaviour for anisotropically consolidated sand with increasing confining pressure under triaxial and general stress conditions.
|Number of pages||38|
|Journal||Memoirs of the Faculty of Engineering, Kyushu University|
|Publication status||Published - Jun 1991|
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