A fundamental property of any material is its response to a localized stress applied at a boundary. For granular materials consisting of hard, cohesionless particles, not even the general form of the stress response is known. Directed force chain networks (DFCNs) provide a theoretical framework for addressing this issue, and analysis of simplified DFCN models reveal both rich mathematical struc...

Abstract: Estimating passive earth pressure accurately is very important when designing retaining wall. Based on the unified strength theory and plane strain assumption, an analytical solution has been developed to determine the passive lateral earth pressure distribution on a retaining structure when the backfill is cohesive and inclined considering the effect of the intermediate principal str...

Objective and Scope of Project The objective of this project was to develop recommendations for compaction of cohesionless soils used as backfill materials. The Texas Department of Transportation (TxDOT) utilizes a number of sources of cohesionless soils as fill materials for embankment construction and as backfill for mechanically stabilized earth (MSE) walls. Some problems have been experienc...

We present the results of both experimental and numerical investigations silo discharge for a cohesive granular material. In our study, thanks to cohesion-controlled material (CCGM) we propose investigate effect length l c , on two different configurations, one axisymmetrical, quasi-2D rectangular silo. an adjustable bottom is used control size orifice. As observed cohesionless by previous stud...

Proper estimation of foundation settlement is a crucial factor in designing shallow foundations. Recent literature shows the applicability of Artificial Neural Networks (ANNs) in predicting the settlement of shallow foundations. However, conventional ANNs have some drawbacks: getting trapped in local minima and a slow rate of learning. Utilization of an optimization algorithm such as Particle S...

The paper focuses on the numerical analysis of the effect of texturial anisotropy on shear localization in cohesionless granular materials. For simulation of the mechanical behavior of a granular material during a monotonous deformation path, a hypoplastic constitutive model was used. To take into account a characteristic length of micro-structure, the constitutive model was extended by micro-p...

One of the most dramatic causes of damage of structures during earthquakes has been the development of liquefaction in saturated cohesionless deposits. These deposits have tendency to densify when subjected to earthquake loading. However, when saturated, the tendency to densify causes the excess pore water pressure to increase. This, in turn, results in the effective stress of soil to decrease....

The behaviour of dry and cohesionless sand body in a cyclic interface shear box test under a constant normal stiffness (CNS) condition is numerically studied. Do this end finite element calculations are carried out using a micro-polar hypoplastic model, where the mean grain diameter of the sand material is used as a characteristic length of the micro-structure. The constitutive equations for th...