Picture of neon light reading 'Open'

Discover open research at Strathprints as part of International Open Access Week!

23-29 October 2017 is International Open Access Week. The Strathprints institutional repository is a digital archive of Open Access research outputs, all produced by University of Strathclyde researchers.

Explore recent world leading Open Access research content this Open Access Week from across Strathclyde's many research active faculties: Engineering, Science, Humanities, Arts & Social Sciences and Strathclyde Business School.

Explore all Strathclyde Open Access research outputs...

Does gravity cause load-bearing bridges in colloidal and granular systems?

Jenkins, M. C. and Haw, M. D. and Barker, G. C. and Poon, W. C. K. and Egelhaaf, S. U. (2011) Does gravity cause load-bearing bridges in colloidal and granular systems? Physical Review Letters, 107 (3). ISSN 0031-9007

[img]
Preview
PDF
bridgespaper_v6_8_PRL.pdf - Preprint

Download (140kB) | Preview

Abstract

We study structures which can bear loads, "bridges", in particulate packings. To investigate the relationship between bridges and gravity, we experimentally determine bridge statistics in colloidal packings. We vary the effective magnitude and direction of gravity, volume fraction, and interactions, and find that the bridge size distributions depend only on the mean number of neighbors. We identify a universal distribution, in agreement with simulation results for granulars, suggesting that applied loads merely exploit preexisting bridges, which are inherent in dense packings.