Nonlinear elastic stress response in granular packings
نویسندگان
چکیده
منابع مشابه
Nonlinear elastic stress response in granular packings.
We study the nonlinear elastic response of a two-dimensional material to a localized boundary force, with the particular goal of understanding the differences observed between isotropic granular materials and those with hexagonal anisotropy. Corrections to the classical Boussinesq result for the stresses in an infinite half space of a linear, isotropic material are developed in a power series i...
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We present measurements of the stress response of packings formed from a wide range of particle shapes. Besides spheres these include convex shapes such as the Platonic solids, truncated tetrahedra, and triangular bipyramids, as well as more complex, non-convex geometries such as hexapods with various arm lengths, dolos, and tetrahedral frames. All particles were 3D-printed in hard resin. Well-...
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Chair of Building Physics, ETHZ, Wolfgang-Paulistrasse 15, CH-8093 Zurich, Switzerland Laboratory for Building Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland Solid Earth Geophysics Group, Los Alamos National Laboratory, MS D443, Los Alamos, 87545 New Mexico, USA Department of Physics, University of Nevada, Reno (NV), USA Institut Langevin, ESPCI ParisTech, CNRS UMR ...
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In this third and final paper of a series, elastic properties of numerically simulated isotropic packings of spherical beads assembled by different procedures, as described in the first companion paper, and then subjected to a varying confining pressure, as reported in the second companion paper, are investigated. In addition to the pressure, which determines the stiffness of contacts because o...
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It is demonstrated, by numerical simulations of a 2D assembly of polydisperse disks, that there exists a range (plateau) of coarse-graining scales for which the stress tensor field in a granular solid is nearly resolution independent, thereby enabling an "objective" definition of this field. Expectedly, it is not the mere size of the system but the (related) magnitudes of the gradients that det...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2008
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.77.031303