Jump to main content
Jump to site search

Issue 8, 2019
Previous Article Next Article

Betweenness centrality as predictor for forces in granular packings

Author affiliations

Abstract

A load applied to a jammed frictional granular system will be localized into a network of force chains making inter-particle connections throughout the system. Because such systems are typically under-constrained, the observed force network is not unique to a given particle configuration, but instead varies upon repeated formation. In this paper, we examine the ensemble of force chain configurations created under repeated assembly in order to develop tools to statistically forecast the observed force network. In experiments on a gently suspended 2D layer of photoelastic particles, we subject the assembly to hundreds of repeated cyclic compressions. As expected, we observe the non-unique nature of the force network, which differs for each compression cycle, by measuring all vector inter-particle contact forces using our open source PeGS software. We find that total pressure on each particle in the system correlates to its betweenness centrality value extracted from the geometric contact network. Thus, the mesoscale network structure is a key control on individual particle pressures.

Graphical abstract: Betweenness centrality as predictor for forces in granular packings

Back to tab navigation

Article information


Submitted
04 Jul 2018
Accepted
26 Dec 2018
First published
28 Dec 2018

Soft Matter, 2019,15, 1793-1798
Article type
Paper
Author version available

Betweenness centrality as predictor for forces in granular packings

J. E. Kollmer and K. E. Daniels, Soft Matter, 2019, 15, 1793 DOI: 10.1039/C8SM01372A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Social activity

Search articles by author

Spotlight

Advertisements