This paper presents detailed microscopic analyses of the surface roughness, roundness,
and sphericity of sands. The surface roughness of three silica sands was studied using the …

This paper describes a procedure used to characterize the three-dimensional (3D) grain
shape of lunar soil and undertake simulations of lunar soil by image-based discrete element …

Understanding the mechanisms behind time-dependent behaviour of granular materials is
important in assessing ageing of dynamically improved sands and set-up of displacement …

This study investigates the effects of particle convexity, sphericity and aspect ratio (AR) on
the behaviour of sheared granular materials using two-dimensional discrete element …

This paper describes an image-based DEM taking account of the irregular shape of solid
particles in a direct manner. A micro X-Ray CT at SPring-8 (a synchrotron radiation facility in …

Assemblies of irregularly shaped particles exhibit higher shear strengths than assemblies of
circular particles. We performed a series of 2D discrete element simulations to demonstrate …

A new boundary condition has been developed for the discrete element method. This
boundary is different from the conventional periodic, rigid, or flexible boundries. This new …

Most sedimentary deposits are inherently anisotropic due to their natural deposition in
horizontal layers. This inherent anisotropy highlights the fact that the response of soils to …

The paper presents a definition of particle rolling for the interactions of two and three-
dimensional particles of arbitrary shape, in case of infinitesimal particle translations and …

Discrete element methods are numerical methods that model granular materials by explicitly
considering their true particulate nature. These methods can be used by geotechnical …