Discrete element modeling of polyhedral representation of granular materials

D. Zhao, E. Nezami, Y. M.A. Hashash, J. Ghaboussi

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

Abstract

The simulation of lunar granular regolith requires the use of models that accurately represent the interaction of highly angular particles. Discrete element method (DEM) is an effective tool for the simulation of granular material behaviors such as particle flows and tool-medium interactions. This paper describes the development of a new three-dimensional discrete element code BLOKS3D for the simulation of polyhedral particles. New algorithms are presented for neighbor search and contact detection. These algorithms are more efficient than currently available in the literature and significantly improve the analysis speed. A series of simulation examples on direct shear tests are presented to demonstrate and evaluate the performance of the proposed algorithms and the overall DEM code. A comparison with a series of physical experiments of the interaction of earthmoving equipment with soil further demonstrates the performance of the developed DEM code. Copyright ASCE 2006.

Original languageEnglish (US)
Title of host publicationEarth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments
Number of pages1
DOIs
StatePublished - Dec 28 2006
EventEarth and Space 2006 - 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments - League City/Houston, TX, United States
Duration: Mar 5 2006Mar 8 2006

Publication series

NameEarth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments
Volume2006

Other

OtherEarth and Space 2006 - 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments
CountryUnited States
CityLeague City/Houston, TX
Period3/5/063/8/06

ASJC Scopus subject areas

  • Engineering(all)

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    Zhao, D., Nezami, E., Hashash, Y. M. A., & Ghaboussi, J. (2006). Discrete element modeling of polyhedral representation of granular materials. In Earth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments (Earth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments; Vol. 2006). https://doi.org/10.1061/40830(188)77