https://doi.org/10.1051/epjconf/201714015033
Linear and nonlinear elastic properties of dense granular packings: a DEM exploration
1 Chair of Building Physics, ETHZ, Wolfgang-Paulistrasse 15, CH-8093 Zurich, Switzerland
2 Laboratory for Building Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
3 Solid Earth Geophysics Group, Los Alamos National Laboratory, MS D443, Los Alamos, 87545 New Mexico, USA
4 Department of Physics, University of Nevada, Reno ( NV), USA
5 Institut Langevin, ESPCI ParisTech, CNRS UMR 7587 - 1 rue Jussieu, 75005 Paris, France
* e-mail: laure.lemrich@alumni.epfl.ch
Published online: 30 June 2017
Discrete Element Method modeling is used to study the frequency spectrum of particle motion in dense 3D packings of glass beads with Hertz-Mindlin contacts. Frequency sweeps show a dependency of the resonant frequencies on the drive amplitude and confining stress on the system, showing material changes in the system. The amplitude dependency of the second thickness mode 3λ/4 as identified by the internal strain field scales as f ∝ σ1/6 while the confining stress dependency scales as f ∝ σ 2/3, as predicted by Hertzian theory.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
