Characterizing and incorporating particle morphology in Discrete Element Modeling

S. Thomas, C. Hurt, C. E. Cary, D. Barrot, P. Giordano, J. Corriveau, S. Mandayam, B. Sukumaran, N. Das, A. Daouadji

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

Abstract

This paper discusses various strategies for characterizing three-dimensional particle morphology of granular media for use within the Discrete Element Methods (DEM) framework. The method utilized for three-dimensional shape characterization was performed on rounded Michigan Dune sand and more angular Daytona Beach sand. The feasibility of using Optical Microscope images for particle reconstruction, since these are the most inexpensive images to acquire, are validated against results from Optical Tomography and X-ray Tomography methods, which are more accurate. The particles reconstructed using this methodology can be captured in DEM by a clustering technique where several circular particles are clumped together. Numerical simulation of dry pluviation are performed to study the effect of grain shape obtained using the clustering algorithms on soil fabric and as validation of the process. Daytona Beach sand, Michigan Dune sand and glass beads are modeled in DEM and it is observed that soil fabric obtained from dry pluviation is strongly dependent on particle morphology.

Original languageEnglish (US)
Title of host publicationGeomechanics from Micro to Macro - Proceedings of the TC105 ISSMGE International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014
PublisherTaylor and Francis - Balkema
Pages201-206
Number of pages6
ISBN (Print)9781138027077
DOIs
StatePublished - 2015
EventInternational Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014 - Cambridge, United Kingdom
Duration: Sep 1 2014Sep 3 2014

Publication series

NameGeomechanics from Micro to Macro - Proceedings of the TC105 ISSMGE International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014
Volume1

Other

OtherInternational Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014
Country/TerritoryUnited Kingdom
CityCambridge
Period9/1/149/3/14

All Science Journal Classification (ASJC) codes

  • Geophysics

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