Abstract Jammed granular matter can be considered a meta-material that behaves viscoelastic for small deformations. We characterize the elastic properties of through response simply supported bending beam consisting jammed under weak load and quasistatic deformation.

in this study, using sound created by wheat grain passing through a pipe, wheat flow rate was measured. the developed device consists of a hopper, metering device, sound sensor, delivery tube, dc motor and power supply. several wheat mass flow rates were tested and the sound signal created by the passage of the grain through the discharge tube was measured and transferred to a computer using da...

An adsorption-desorption (or parking-lot) model can reproduce qualitatively the densification kinetics and other features of a weakly vibrated granular material. Here we study the the two-time correlation and response functions of the model and demonstrate that their behavior is consistent with recently observed memory effects in granular materials. Although the densification kinetics and hyste...

A statistical mechanical approach to granular material is proposed. Using lattice models from standard Statistical Mechanics and results from a mean field replica approach we find a jamming transition in granular media closely related to the glass transition in super-cooled liquids. These models reproduce the logarithmic relaxation in granular compaction and reversible-irreversible lines, in ag...

The behaviour of a granular material is mainly dependent on its frictional properties, angle of internal friction, and cohesion, which, together with material density, are the key factors to be considered during the scaling procedure of analogue models. The frictional properties of a granular material are usually investigated by means of technical instruments such as a Hubbert-type apparatus an...

Because of the huge commercial importance of granular systems, the second-most used material in industry after water, intersecting the industry in multiple trades, like pharmacy and agriculture, fundamental research on grain-like materials has received an increasing amount of attention in the last decades. In photonics, the applications of granular materials have been only marginally investigat...

Granular materials, such as sand, gravel, grains, and salt, represent a large portion of the world around us, yet the dynamic behavior of these materials is not well understood. This lack of understanding is due, in large part, to the inherent difficulty in measuring the movement of and forces on individual particles. Computer simulations may be able to provide insight to this problem. Leveragi...

Title of dissertation: ONSET OF GRANULAR FLOWS BY LOCAL AND GLOBAL FORCING Masahiro Toiya, Doctor of Philosophy, 2006 Dissertation directed by: Professor Wolfgang Losert Department of Physics, Institute for Research in Electronics and Applied Physics and Institute for Physical Sciences and Technology This thesis focuses on the onset of granular flows and memory effects in granular materials und...