Abstract
To account for the fabric effect on the localized failure, the fabric tensor describing the soil fabric is related to the stress tensor and a micromechanics-based isotropic-kinematic model is developed in this study. With this model, the effect of fabric anisotropy on the onset of localization and the angle of shear band, is investigated and compared with the experimental results. Meanwhile, discrete element method (DEM) simulation is carried out to study the localized failure of granular soil and the evolution of fabric anisotropy during shearing. The numerical results are compared with the theoretical predictions by the micromechanics-based model. This study successfully illustrates the importance of considering the fabric anisotropy in constitutive modeling of the localized failure in granular soil.
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