Suffusion is a particular case of internal erosion in soils. It is a particle-scale mechanism
involving the selective erosion of fine particles within the matrix of coarse particles under the …

The quality of powder beds is a key factor governing the density of bulk parts produced by
the powder bed fusion–additive manufacturing (PBF-AM) process. Conventional …

Understanding powder spreading under low gravity conditions is essential for optimizing
final products using additive manufacturing in space. In this study, we investigated the role of …

Powder flowability affects dynamic powder behavior during additive manufacturing and
varies depending on particle size distribution, particle morphology, and surface features. In …

In any DEM simulation, the chosen particle shape will greatly influence the simulated
material behaviour. For a specific material, eg railway ballast, it remains an open question …

Discrete numerical simulations were carried out to reproduce experimental results obtained
on loose cohesionless soil samples subjected to triaxial tests. Periodic boundary conditions …

A pore-scale model is introduced for two-phase flow in dense packings of polydisperse
spheres. The model is developed as a component of a more general hydromechanical …

The aim of this work is to provide closure laws for a macroscopic model of the heat and
momentum transfer of real rock packings. We use X-ray nanotomography to obtain the …

This paper presents a numerical study of the effect of fine content on the mechanical
behavior of bidisperse granular materials using the discrete element method. Triaxial …

Constitutive behaviors of granular materials are driven by both particle interactions and
geometric arrangements of contact network. To bridge the gap between the grain scale and …