Please use this identifier to cite or link to this item: http://dx.doi.org/10.25673/88567
Title: Force chains in crystalline and frustrated packing visualized by stress-birefringent spheres
Author(s): Fischer, David
Stannarius, Ralf
Tell, Karsten
Yu, Peidong
Sperl, Matthias
Issue Date: 2021
Type: Article
Language: English
URN: urn:nbn:de:gbv:ma9:1-1981185920-905224
Subjects: Force networks
Stress-birefringent spheres
Granular material
Janssen effect
Abstract: Force networks play an important role in the stability of configurations when granular material is packed into a container. These networks can redirect part of the weight of grains inside a container to the side walls. We employ monodisperse stress-birefringent spheres to visualize the contact forces in a quasi-2D and a nearly-2D configuration of these spheres in a thin cuboid cell. The packing structures are particularly simple: a hexagonal lattice in the ground state when the cell width is equal to the sphere diameter, and a frustrated, slightly distorted lattice in thicker cells. The force redistribution is substantially changed by this geometrical modification. In both cases, we observe an ‘inverse’ Janssen effect with the pressure decreasing from the top to the bottom of the container when the material is loaded with a weight on top of the vessel.
URI: https://opendata.uni-halle.de//handle/1981185920/90522
http://dx.doi.org/10.25673/88567
Open Access: Open access publication
License: (CC BY-NC 3.0) Creative Commons Attribution NonCommercial 3.0(CC BY-NC 3.0) Creative Commons Attribution NonCommercial 3.0
Sponsor/Funder: Transformationsvertrag
Journal Title: Soft matter
Publisher: Royal Soc. of Chemistry
Publisher Place: London
Volume: 17
Issue: 16
Original Publication: 10.1039/d0sm02048f
Page Start: 4317
Page End: 4327
Appears in Collections:Fakultät für Naturwissenschaften (OA)

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