4 papers
Robust propagation direction of stresses in a minimal granular packing
D. A. Head, A. V. Tkachenko, T. A. Witten
By employing the adaptive network simulation method, we demonstrate that the ensemble-averaged stress caused by a local force for packings of frictionless rigid beads is concentrat…
Memory Effects in Granular Material
Christophe Josserand, Alexei Tkachenko, Daniel M. Mueth +1
We present a combined experimental and theoretical study of memory effects in vibration-induced compaction of granular materials. In particular, the response of the system to an ab…
Stress in frictionless granular material: Adaptive Network Simulations
Alexei V. Tkachenko, Thomas A. Witten
We present a minimalistic approach to simulations of force transmission through granular systems. We start from a configuration containing cohesive (tensile) contact forces and use…
Stress Propagation through Frictionless Granular Material
Alexei V. Tkachenko, Thomas A. Witten
We examine the network of forces to be expected in a static assembly of hard, frictionless spherical beads of random sizes, such as a colloidal glass. Such an assembly is minimally…