Modeling of heterogeneous materials and media is a problem of fundamental importance to
a wide class of phenomena and systems, ranging from condensed matter physics, soft …

Granular materials consist of macroscopic grains, interacting via contact forces, and
unaffected by thermal fluctuations. They are one of a class systems that undergo jamming, ie …

A broad class of disordered materials including foams, glassy molecular systems, colloids
and granular materials can form jammed states. A jammed system can resist small stresses …

Photoelastic techniques are used to make both qualitative and quantitative measurements of
the forces within idealized granular materials. The method is based on placing a birefringent …

Slowly sheared granular materials at high packing fractions deform via slip avalanches with
a broad range of sizes. Conventional continuum descriptions are not expected to apply to …

A photoelastic material will reveal its internal stresses when observed through polarizing
filters. This eye-catching property has enlightened our understanding of granular materials …

This paper investigates the role of force chains in granular materials under both quasi-static
biaxial loading and dynamic impact loading conditions. This study is mainly interested in …

Soft, disordered, micro-structured materials are ubiquitous in nature and industry, and are
different from ordinary fluids or solids, with unusual, interesting static and flow properties …

We describe experiments that probe the evolution of shear jammed states, occurring for
packing fractions ϕ S≤ ϕ≤ ϕ J, for frictional granular disks, where above ϕ J there are no …

Self-organization, and transitions from reversible to irreversible behavior, of interacting
particle assemblies driven by externally imposed stresses or deformation is of interest in …