Discrete element methods (DEM) are promising numerical methods for analysing the complexities of granular material response as they can consider the particle scale interactions in these materials. In this book a virtual test environment was developed for granular materials using DEM. Two fundamental geotechnical laboratory tests, the direct shear test and the triaxial test, were implemented in this virtual test environment. This test environment was validated by comparing simulation results with physical experiment results. Further DEM simulations were then performed to analyse the...