UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Strong force networks in granular mixtures

Minh, NH; Cheng, YP; Thornton, C; (2014) Strong force networks in granular mixtures. Granular Matter , 16 (1) 69 - 78. 10.1007/s10035-013-0455-3. Green open access

[img] Text
2014_Minh_GM16p69_mixture.pdf
Access restricted to UCL open access staff

Download (1MB)

Abstract

Using the results of 3D discrete element method simulations we study the force transmission through binary mixtures of sand and silt sized spheres under one-dimensional compression. Three types of contact are categorized depending on the size of the two spheres in contact. The contributions of each contact type to the deviator stress are dependent on the proportion of silt sized spheres. We demonstrate that the magnitude of the deviator stress is solely due to the normal and tangential forces at contacts transmitting normal forces greater than a characteristic normal force, which is generally slightly greater than the average normal force. The maximum packing efficiency was obtained with the mixture of 30 % silt sized spheres and this mixture corresponds to a transition point when there are enough silt sized particles to start to separate the sand sized particles from each other and establish contacts between silt sized spheres that contribute to the deviator stress.

Type: Article
Title: Strong force networks in granular mixtures
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/s10035-013-0455-3
Publisher version: http://dx.doi.org/10.1007/s10035-013-0455-3
Language: English
Keywords: Granular mixtures, Discrete element, Strong force transmission, Characteristic force, Force distribution, One dimensional compression
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1414218
Downloads since deposit
0Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item