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An approximation of for given time increment ∆t = () − − .

An approximation of for given time increment ∆t = () − − .

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Figure 1. Two phases of representative elementary volume.
Figure 4. In the π-plane, comparison of the true triaxial test (TTT)...
Figure 6. An approximation of for given time increment ∆t = () − − .
Figure 8. The Cambridge stress state in a conventional triaxial test...
+1 Figure 9. Comparison of observed and predicted triaxial compression...
Non-Associated Flow Rule-Based Elasto-Viscoplastic Model for Clay
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  • Aug 2020
We develop a non-associated flow rule (NAFR) based elasto-viscoplastic (EVP) model for isotropic clays. For the model formulation, we introduce the critical state soil mechanics theory (CSSMT), the bounding surface theory and Perzyna's overstress theory. The NAFR based EVP model comprises three surfaces: the potential surface, the reference surface...
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Context 1
... From Figure 6, for a given function with time interval ∆∆ = = − − , using the mean value theorem, we obtain: ...
Context 2
... represents time (see also Figure 6 and Segerlind [33]) Additionally, from Figure 6 and Equation (51), the value of () can be obtained as: ...
Context 3
... represents time (see also Figure 6 and Segerlind [33]) Additionally, from Figure 6 and Equation (51), the value of () can be obtained as: ...
Context 4
... Again, at = = (see Figure 6), in Equation (50) is given by (see Segerlind [33]): ...