The model can be useful in simulation of the behavior of Isotropy, and the criterion for failure is a local Mohr-Coulomb yieldĬriterion. Weakness, which matches the orientation of the plane of elastic Of an elastic, transversely isotropic (anisotropic) model with that of Solid (excavation in closely bedded strata). Includes weak planes of specific orientation embedded in a Mohr-Coulomb The ubiquitous-joint model is an anisotropic plasticity model that General soil or rock mechanics for slope stability and undergroundĮxcavation general soil or rock mechanics. Match well with the Mohr-Coulomb criterion. Vermeer and deBorst (1984),įor example, report laboratory test results for sand and concrete that The Mohr-Coulomb model is the conventional model used to represent shear failure in soils and rocks. Mainly to permit comparison with other numerical program results Recommended for application to geologic materials. The Drucker-Prager plasticity model may be useful to model soft clays

The elastic, transversely isotropic model gives the ability to simulate layered elastic media in which there are distinctly different elastic moduli in directions normal and parallel to the layers (laminated materials loaded below strength limit). This model is valid for homogeneous, isotropic, continuous materials that exhibit linear stress-strain behavior with no hysteresis on unloading (manufactured materials such as steel, for instance, loaded below strength limit factor-of-safety calculation). The elastic, isotropic model provides the simplest representation of material behavior. This is more advantageous than deleting zones because zone materials can be changed later (for instance, to represent backfill in a construction stage). A null material model can be assigned to zones to represent material that is removed or excavated (holes, excavations, regions in which material will be added at later stage).

Fish function ellipse flac3d