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Effects of Inherent Fabric Anisotropy and Intermediate Principal Stress on Constitutive Behavior of Uncemented and Cemented Sands
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- Author(s) / Creator(s)
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Sand response changes with intensity of cementation bonds between sand grains,
magnitude of intermediate principal stress and with fabric anisotropy. First a critical
state bounding surface plasticity model is presented in this paper. In this
constitutive model, the loading surface always passes through the current stress
state regardless of location or position of the stress path. Second to simulate hollow
cylinder tests which represent different modes of shearing including triaxial
compression and triaxial extension, the fabric anisotropy and ๐-parameter are
incorporated in the model. Simultaneous integration of cohesion, non-associated
flow rule, fabric anisotropy, kinematic hardening, critical state and state parameter
makes the proposed model unique compared to previous proposed bounding surface
models. Comparison of model outcomes and hollow cylinder experimental tests
shows great predictive capability of the proposed model. Sensitivity analysis also
suggests that triaxial compression and triaxial extension are respectively strongest
and weakest modes of shearing. -
- Date created
- 2016-01-01
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- Type of Item
- Article (Draft / Submitted)