| Popis: |
The authors focus on constitutive modelling of solid to fluid phase transition in granular soils. A new constitutive approach conceived to capture such a transition in either dry or saturated granular material is validated against DEM numerical simulations for steady conditions and discussed in the framework of the μ-e-I rheology. The approach considers granular and liquid phases separately, assuming the two phases work in parallel, as it is according to the effective stress principle in case of quasi-static conditions. The authors emphasize the importance of considering separately the two phase contributions and the limitations of the μ-e-I rheology, in particular in relation to the volumetric response of the material. |
