Micro-characteristics of monodisperse and best-packing mixture samples under one dimensional compression

N. H. Minh, Y. P. Cheng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

One dimensional compression behavior of poorly graded soils and their mixtures have been investigated using the discrete element method PFC3D software package with spherical particles and a size-related linear elastic contact model. Simulation results show that, for soil samples of the same grading that were compressed from different initial solid fractions, there exists a unique relationship between solid fraction and vertical stress at high stress levels. Contact force distributions of these different samples fall on a similar distribution curve in the same stress range. There is also a convergence for the size distributions of particles involved in the transmission of greater-than-average (strong) contact forces in each system. The results are mainly presented for a sand-like monodisperse material and a best packing efficiency mixture material. Cumulative contributions of individual contact forces to the deviator stress were calculated and the results show that the deviator stress is primarily attributed to the strong forces for both monodisperse and mixture materials.

Original languageEnglish
Title of host publicationPowders and Grains 2013 - Proceedings of the 7th International Conference on Micromechanics of Granular Media
Pages265-268
Number of pages4
DOIs
Publication statusPublished - 2013
Event7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013 - Sydney, NSW, Australia
Duration: Jul 8 2013Jul 12 2013

Publication series

NameAIP Conference Proceedings
Volume1542
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013
CountryAustralia
CitySydney, NSW
Period7/8/137/12/13

Keywords

  • discrete element
  • force distribution
  • gap-graded
  • mixture
  • normal compression line
  • sand
  • silt
  • strong force

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • Physics and Astronomy(all)
  • Nature and Landscape Conservation

Fingerprint Dive into the research topics of 'Micro-characteristics of monodisperse and best-packing mixture samples under one dimensional compression'. Together they form a unique fingerprint.

Cite this