Abstract A variational model of pressure-dependent plasticity employing a time-incremental setting is introduced. novel formulation the dissipation potential allows one to construct condensed energy in variationally consistent manner. For one-dimensional problem, an explicit expression for quasiconvex envelope can be found which turns out essentially independent original yield surface. The prob...

The existence and uniqueness of the so-called critical state in soil mechanics is validated in our DEM simulations of irregular polygonal particles. « For different particle shape characteristics„ The critical state is found to be independent of the initial stress and density.» We retain low stress levels, since we do not take into account the crushing of particles. « »In biaxial test simulatio...

The mechanical behavior of soils has been traditionally described using continuum-mechanics-based models. These are empirical relations based on laboratory tests of soil specimens. The investigation of the soils at the grain scale using discrete element models has become possible in recent years. These models have provided valuable understanding of many micromechanical aspects of soil deformati...