How to get the Yield Locus of an Adhesive Powder from a Single Numerical Experiment

Stefan Luding, Fernando Alonso-Marroquin

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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), several continuum fields like the deformation gradient and stress are computed and evaluated 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 non-cohesive granular materials and non-linear with peculiar pressure dependence for adhesive powders. While the contact model will possibly need additional effects to be included in order to resemble realistic powders, the method how to obtain yield loci from a single numerical test on one material appears very promising and waits for calibration and validation.
Original languageUndefined
Title of host publication6th International Conference for Conveying and Handling of Particulate Solid
EditorsPeter Wypych
Place of PublicationBarton ACT, Australia
PublisherEngineers Australia
Pages472-477
ISBN (Print)978-1-62276-432-7
Publication statusPublished - 3 Aug 2009
Event6th International Conference for Conveying and Handling of Particulate Solids, CHoPS 2009: Integrating Scientific and Industry Communities - Brisbane Convention & Exhibition Centre, Brisbane, Australia
Duration: 3 Aug 20097 Aug 2009
Conference number: 6

Publication series

Name
PublisherEngineers Australia

Conference

Conference6th International Conference for Conveying and Handling of Particulate Solids, CHoPS 2009
Abbreviated titleCHoPS
CountryAustralia
CityBrisbane
Period3/08/097/08/09

Keywords

  • METIS-262761
  • IR-80354

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