Constitutive behavior of granular media using a lattice type model

S. Ramakrishnan, Muniram Budhu, George Frantziskonis

Research output: Contribution to conferencePaper

Abstract

In this paper, a lattice type model is used to gain an insight into the mechanical behavior of granular media. In a two dimensional simulation, nodes are introduced at grain contacts and the nodes are linked by bars. An assembly of grains, is transformed into truss elements and the truss is then analyzed using finite element analysis. The areas of bars are derived by computing the displacements of an elastic disk under contact forces and then determining the bar areas that will give equivalent displacements in the direction of the bars. Bonding, debonding, sliding and rotation of particles are incorporated in this model. The lattice type model is applied on a loose and dense packing of disks. The two packings are subjected to an initial vertical load followed by a simple shear deformation. The results of numerical tests are in general agreement with the behavior of sands in laboratory simple shear tests.

Original languageEnglish (US)
Pages713-716
Number of pages4
StatePublished - Jan 1 1996
EventProceedings of the 1996 11th Conference on Engineering Mechanics. Part 1 (of 2) - Fort Lauderdale, FL, USA
Duration: May 19 1996May 22 1996

Other

OtherProceedings of the 1996 11th Conference on Engineering Mechanics. Part 1 (of 2)
CityFort Lauderdale, FL, USA
Period5/19/965/22/96

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ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture

Cite this

Ramakrishnan, S., Budhu, M., & Frantziskonis, G. (1996). Constitutive behavior of granular media using a lattice type model. 713-716. Paper presented at Proceedings of the 1996 11th Conference on Engineering Mechanics. Part 1 (of 2), Fort Lauderdale, FL, USA, .