%0 Conference Proceedings
%T Tuning strain of granular matter by basal assisted Couette shear
%+ Department of Physics & Center for Nonlinear and Complex Systems
%+ Laboratoire de Mécanique et Génie Civil (LMGC)
%+ Physique et Mécanique des Milieux Divisés (PMMD)
%+ School of Earth Science and Engineering
%A Zhao, Yiqiu
%A Barés, Jonathan
%A Zheng, Hu
%A Behringer, Robert
%< avec comité de lecture
%B Powders and Grains 2017
%C Montpellier, France
%3 Powders and Grains 2017 proceedings
%8 2017-07-03
%D 2017
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]Conference papers
%X We present a novel Couette shear apparatus capable of generating programmable azimuthal strain inside 2D granular matter under Couette shear. The apparatus consists of 21 independently movable concentric rings and two boundary wheels with frictional racks. This makes it possible to quasistatically shear the granular matter not only from the boundaries but also from the bottom. We show that, by specifying the collective motion of wheels and rings, the apparatus successfully generates the desired strain profile inside the sample granular system, which is composed of about 2000 photoelastic disks. The motion and stress of each particle is captured by an imaging system utilizing reflective photoelasticimetry. This apparatus provides a novel method to investigate shear jamming properties of granular matter with different interior strain profiles and unlimited strain amplitudes.
%G English
%2 https://hal.science/hal-01499250/document
%2 https://hal.science/hal-01499250/file/Rings.pdf
%L hal-01499250
%U https://hal.science/hal-01499250
%~ CNRS
%~ LMGC
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021