Introduction.- Generation of Irregular Shaped Particle Elements.- Micro Contact Model of Granular Materials.- Macro-micro Analysis of Granular Materials.- DEM-FEM Coupling Analysis of Granular Materials.- Fluid-Solid Coupling Analysis of Granular Materials.- High Performance Algorithm, Computing and Analysis Software of DEM Based on GPU Parallel Technology.- DEM Analysis for Ice Loads on Ship and Offshore Structure.- DEM Analysis for Characteristics of Railway Ballast Bed.- DEM Analysis of Vibration Reduction and Buffering Capacity of Granular Material.