An Elastic-Viscoplastic Constitutive Model for Earth Materials
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
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This report describes the development of a three-dimensional elastic- viscoplastic work-hardening constitutive relationship for earth materials. The constitutive relationship is capable of reproducing the hysteretic behavior of the material under both hydrostatic and deviatoric states of stress it also accounts for shear-induced volume change and the effect of superimposed hydrostatic stress on shearing response. The capability of the constitutive relationship for simulating the time-dependent response of earth materials is examined an example fit for a clayey sand is given based on static laboratory triaxial shear and static and dynamic uniaxial strain test results.
- Soil Mechanics