Image made using the COMSOL Multiphysics® software and is provided courtesy of COMSOL.
The horizontal stresses, deformation and plastic regions are plotted from a model of the excavation of soil. The Drucker-Prager plastic model is used in the simulation.
As an add-on to the Structural Mechanics Module, the Geomechanics Module allows you to analyze geotechnical applications, such as tunnels, excavations, slope stability, and retaining structures. Utilizing a number of nonlinear geomechanics material models, it contains tailor-made physics Interfaces for investigating deformation, plasticity, creep, and failure of soils and rocks, and their interactions with piles, supports, and other manufactured structures.
The Geomechanics Module comes with standard nonlinear material models that describe metal plasticity through the von Mises and Tresca criteria. Yet, the essence of the Geomechanics Module is the nonlinear material models for soils, concrete, and rock that are built into physics interfaces modeling solid mechanics.