The incremental behavior of granular materials is characterized by strong non-linearity and
irreversibility. If the definition of a proper constitutive nodel is of concern, an accurate …

This paper presents gradient type algorithms to solve frictional multi-contact problems
written as quasi-optimization problems. A single loop scheme formally close to the classical …

As the rheology of the third body does not only depend on its mechanical properties,
classical discrete element simulations are not capable of modeling its flows. Consequently …

This paper is dedicated to the understanding of the phenomena, which give rise to
anisotropy and non-coaxiality in granular materials. In achieving three-dimensional …

Systematic numerical simulations of model dense granular materials in monotonous,
quasistatic deformation reveal the existence of two different r\'egimes. In the first one, the …

We study the evolution of structure inside a deforming, cohesionless granular material
undergoing failure in the absence of strain localisation–so-called diffuse failure. The spatio …

When investigating the electrical characteristics of granular assemblies under dynamical
solicitations (powder, steel bead assemblies, etc.), it is difficult to distinguish between effects …

As a generalized constitutive relationship for granular media, incrementally nonlinear
models have been proposed by many researchers. However, it is hard to evaluate the …

The incremental behavior of granular materials is characterized by strong nonlinearity. This
feature turns into the need for an accurate experimental investigation of the nature of the …

Geophysical problems as forced-fold evolution and fault propagation induce large
deformations and many localisation. The continuum mechanics does not seem the more …