131 citations · 330 across the 4 of their papers we have counts for
9 papers
Excitations of Ellipsoid Packings near Jamming
Z. Zeravcic, N. Xu, A. J. Liu +2
We study the vibrational modes of three-dimensional jammed packings of soft ellipsoids of revolution as a function of particle aspect ratio and packing fraction. At the jamming…
Comparison of low amplitude oscillatory shear in experimental and computational studies of model foams
Micah Lundberg, Kapilanjan Krishan, Ning Xu +2
A fundamental difference between fluids and solids is their response to applied shear. Solids possess static shear moduli, while fluids do not. Complex fluids such as foams display…
Energy transport in jammed sphere packings
Ning Xu, Vincenzo Vitelli, Matthieu Wyart +2
We calculate the normal modes of vibration in jammed sphere packings to obtain the energy diffusivity, a spectral measure of transport. At the boson peak frequency, we find an Ioff…
Excess Vibrational Modes and the Boson Peak in Model Glasses
Ning Xu, Matthieu Wyart, Andrea J. Liu +1
The excess low-frequency normal modes for two widely-used models of glasses were studied at zero temperature. The onset frequencies for the anomalous modes for both systems agree w…
Measurements of the Yield Stress in Frictionless Granular Systems
Ning Xu, Corey S. O'Hern
We perform extensive molecular dynamics simulations of 2D frictionless granular materials to determine whether these systems can be characterized by a single static yield shear str…
Stabilization of nonlinear velocity profiles in athermal systems undergoing planar shear flow
Ning Xu, Corey S. O'Hern, Lou Kondic
We perform molecular dynamics simulations of model granular systems undergoing boundary-driven planar shear flow in two spatial dimensions with the goal of developing a more comple…