Abstract
We describe here experiments on the mechanics of hydrogel particle packings from the Behringer lab, performed between 2012 and 2015. These experiments quantify the evolution of all contact forces inside soft particle packings exposed to compression, shear, and the intrusion of a large intruder. The experimental set-ups and processes are presented and the data are concomitantly published in a repository (Barés et al. in Dryad, Dataset https://doi.org/10.5061/dryad.6djh9w0x8, 2019).
Highlights
Granular materials are ubiquitous; the many grains that compose them can be as small as confectionery sugar or as large as asteroids
Data corresponding with experiments described in the previous section are compiled in a Dryad repository [1]
Our aim with the release of these data sets is that these experimental data contribute to a better understanding of the multiscale physics of granular materials in general
Summary
Granular materials are ubiquitous; the many grains that compose them can be as small as confectionery sugar or as large as asteroids. Most experimental measurements on granular micromechanics have been done via photoelasticimetry [6,7,8] on two-dimensional model systems. Realistic granular materials, such as grains in the industries listed above, are three dimensional. The need for experiments that can extract three dimensional (3D) contact level information from a granular material under realistic loading conditions is paramount. 3D imaging experiments are typically technically challenging, expensive and/or time consuming to carry out. All experiments have been performed in the Behringer lab at
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