"DEM simulations of critical state behaviour of granular materials unde" by Shiva Prashanth Kumar Kodicherla, Guobin Gong et al.
The present study investigates the critical state behaviour of granular assemblies composed of clumped particles under four different drained axisymmetric triaxial stress paths, using the discrete element method (DEM). A series of numerical samples were prepared at initial states with different density indexes (ID) and different initial confining pressures (po′). These samples were sheared to large strains, at which constant stresses and volumes were maintained to reach the critical state. The evolution of stress ratio under the same loading mode (for the same intermediate principal stress r...
Source: uow.edu.au