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Particle rearrangement and softening contributions to the nonlinear mechanical response of glasses
Meng Fan, Kai Zhang, Jan Schroers +2
Amorphous materials such as metallic, polymeric, and colloidal glasses, exhibit complex preparation-dependent mechanical response to applied shear. We perform numerical simulations…
Entropic origin of stress correlations in granular materials
Gregg Lois, Jie Zhang, Trushant S. Majmudar +4
We study the response of granular materials to external stress using experiment, simulation, and theory. We derive an entropic, Ginzburg-Landau functional that enforces mechanical…
A percolation model for slow dynamics in glass-forming materials
Gregg Lois, Jerzy Blawzdziewicz, Corey S. O'Hern
We identify a link between the glass transition and percolation of mobile regions in configuration space. We find that many hallmarks of glassy dynamics, for example stretched-expo…
A minimal model for kinetic arrest
Prasanta Pal, Corey S. O'Hern, Jerzy Blawzdziewicz +1
To elucidate slow dynamics in glassy materials, we introduce the {\it Figure-8 model} in which hard blocks undergo Brownian motion around a circuit in the shape of a figure-8.…
Entropy and Temperature of a Static Granular Assembly
Silke Henkes, Corey S. O'Hern, Bulbul Chakraborty
Granular matter is comprised of a large number of particles whose collective behavior determines macroscopic properties such as flow and mechanical strength. A comprehensive theory…
Understanding the Frequency Distribution of Mechanically Stable Disk Packings
Guo-Jie Gao, Jerzy Blawzdziewicz, Corey S. O'Hern
Relative frequencies of mechanically stable (MS) packings of frictionless bidisperse disks are studied numerically in small systems. The packings are created by successively compre…