Modeling of granular materials - a numerical model using lattices

Muniram Budhu, S. Ramakrishnan, George N Frantziskonis

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

2 Citations (Scopus)

Abstract

In this paper, a numerical model is presented in which the particles in a granular assembly are modeled as lattices. In a two dimensional simulation, nodes are introduced at particle contacts and are linked by bar elements. A granular assembly is then transformed into a statically indeterminate truss and is analyzed using standard techniques in structural mechanics. The areas of bars are derived by computing the displacements of an elastic disk under contact forces and then the bar areas that will give equivalent displacements in the direction of the bars are determined. The lattice type model incorporates bonding, debonding, sliding and rotation of particles. The lattice type model has been applied to loose and dense packing of disks. The two packings were subjected to simple shear deformation after an initial vertical load was applied. The results from the lattice type model agree with the results from numerical tests using the discrete element method and with results of photoelastic experiments.

Original languageEnglish (US)
Title of host publicationASME-ASCE-SES Joint Summer Meeting
PublisherASCE
Pages77-90
Number of pages14
StatePublished - 1997
EventProceedings of the 1997 ASME-ASCE-SES Joint Summer Meeting - Evanston, IL, USA
Duration: Jun 29 1997Jul 2 1997

Other

OtherProceedings of the 1997 ASME-ASCE-SES Joint Summer Meeting
CityEvanston, IL, USA
Period6/29/977/2/97

Fingerprint

Granular materials
Numerical models
Debonding
Finite difference method
Shear deformation
Mechanics
Experiments

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Budhu, M., Ramakrishnan, S., & Frantziskonis, G. N. (1997). Modeling of granular materials - a numerical model using lattices. In ASME-ASCE-SES Joint Summer Meeting (pp. 77-90). ASCE.

Modeling of granular materials - a numerical model using lattices. / Budhu, Muniram; Ramakrishnan, S.; Frantziskonis, George N.

ASME-ASCE-SES Joint Summer Meeting. ASCE, 1997. p. 77-90.

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

Budhu, M, Ramakrishnan, S & Frantziskonis, GN 1997, Modeling of granular materials - a numerical model using lattices. in ASME-ASCE-SES Joint Summer Meeting. ASCE, pp. 77-90, Proceedings of the 1997 ASME-ASCE-SES Joint Summer Meeting, Evanston, IL, USA, 6/29/97.
Budhu M, Ramakrishnan S, Frantziskonis GN. Modeling of granular materials - a numerical model using lattices. In ASME-ASCE-SES Joint Summer Meeting. ASCE. 1997. p. 77-90
Budhu, Muniram ; Ramakrishnan, S. ; Frantziskonis, George N. / Modeling of granular materials - a numerical model using lattices. ASME-ASCE-SES Joint Summer Meeting. ASCE, 1997. pp. 77-90
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