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Relating particle characteristics to macro behavior of DEM crushable material

Nakata, Y; Bolton, MD; Cheng, YP; (2005) Relating particle characteristics to macro behavior of DEM crushable material. In: (pp. pp. 1387-1391).

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Abstract

The behavior of a real soil is influenced by the crushing strength of its grains as well as their contact stiffness and coefficient of friction. This can conveniently be explored by DEM, creating agglomerates of bonded micro-spheres to represent grains. Simulations with a variety of contact properties have been used to demonstrate the impact of the bond strength to stiffness ratio on the characteristic strength of the model grains, and on the stress dependence of soil elements simulated as an assembly of these grains. For grains with a given strength, the peak stress ratio of an element under triaxial compression is shown to reduce realistically as the mean stress increases. Interestingly, this reduction occurs earlier if the bond stiffness is increased. © 2005 Taylor & Francis Group.

Type: Proceedings paper
Title: Relating particle characteristics to macro behavior of DEM crushable material
ISBN: 0415383471
UCL classification: UCL > School of BEAMS > Faculty of Engineering Science
UCL > School of BEAMS > Faculty of Engineering Science > Civil, Environmental and Geomatic Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/36449
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