Constitutive relations of dense granulates with friction and adhesion from DEM

Stefan Luding, E. Oñate (Editor), D.R.J Owen (Editor)

Research output: Contribution to conferencePaperAcademic

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Abstract

Granular materials in a split-bottom ring shear cell geometry show wide shear bands under slow, quasi-static deformation. From discrete element simulations (DEM), continuum fields like the deformation gradient and stress can be computed with the goal to formulate objective constitutive relations for the flow behavior. From a single simulation only, by applying time- and (local) space-averaging, yield loci can be obtained: linear for noncohesive granular materials and non-linear with peculiar pressure dependence for adhesive powders.
Original languageUndefined
Number of pages4
Publication statusPublished - 2009
Event1st International Conference on Particle-Based Methods, PARTICLES 2009 - Barcelona, Spain
Duration: 25 Nov 200927 Nov 2009
Conference number: 1

Conference

Conference1st International Conference on Particle-Based Methods, PARTICLES 2009
Abbreviated titlePARTICLES
CountrySpain
CityBarcelona
Period25/11/0927/11/09

Keywords

  • IR-80353
  • DEM
  • split bottom ring-shear cell
  • constitutive models for cohesive powders

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