The frictional properties of disordered systems are affected by external perturbations. These
perturbations usually weaken the system by reducing the macroscopic friction coefficient …

We carry out experiments of low velocity normal impacts into granular materials that fill an
approximately cylindrical 42 liter tub. Motions in the granular medium are tracked with an …

Elastic properties of a granular packing show a nonlinear behavior determined by its
discrete structure and nonlinear inter-grain force laws. Acoustic waves show a transition …

We experimentally investigate the fluidization of a granular material subject to mechanical
vibrations by monitoring the angular velocity of a vane suspended in the medium and driven …

One of the purposes in this study is to develop a micromorphic continuum model for granular
materials based on a micromechanics approach. A symmetric curvature tensor is proposed …

We investigate the effect of dynamic and uniaxial static loading on the wave speeds and rise
times of laser generated acoustic waves traveling through a disordered, multilayer …

In the presented work, wave dynamics of 2D finite granular crystals of polyurethane
cylinders under low-velocity impact loading was investigated to gain better understanding of …

We investigate shock propagation in confined, frictionless granular media using discrete
element simulations with an elastoplastic contact law. Depending on the level of …

Solitary waves in alignment of elastic beads have been an important area of study. An
important and rich area has been the behavior of solitary waves at a boundary, where …

According to the acoustic fluidization hypothesis, elastic waves at a characteristic frequency
form inside seismic faults even in the absence of an external perturbation. These waves are …