Evolution of swelling pressure of cohesive-frictional, rough and elasto-plastic granulates

Stefan Luding, Erich Bauer

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Abstract

The subject of this study is the modeling of the evolution of the swell-ing pressure of granulates with cohesive-frictional, rough and elasto-plastic “mi-croscopic” contact properties. The spherical particles are randomly arranged in a periodic cubic space with a fixed volume so that an increase of the particle size – i.e. swelling that can be caused by intake of some fluid – is accompanied by a de-crease of the void space. An analytical function is proposed that properly de-scribes the (macroscopic) void ratio as function of pressure for different micro-scopic contact properties.
Original languageEnglish
Title of host publicationGeomechanics and Geotechnics: From Micro to Macro
Subtitle of host publicationProceedings of the International Symposium on Geomechanics and Geotechnics: From Micro to Macro, IS-Shanghai 2010
EditorsMingjing Jiang, Fang Liu, Malcolm Bolton
Place of PublicationShanghai, China
PublisherCRC Press
Pages495-499
ISBN (Electronic)978-0-203-83118-2
ISBN (Print)978-0-415-61295-1, 978-0-415-61297-5, 978-0-415-61298-2
Publication statusPublished - 10 Oct 2010
EventInternational Symposium on Geomechanics and Geotechnics, IS-Shanghai 2010: From Micro to Macro - Shanghai, China
Duration: 10 Oct 201012 Oct 2010

Conference

ConferenceInternational Symposium on Geomechanics and Geotechnics, IS-Shanghai 2010
Abbreviated titleIS-Shanghai 2010
CountryChina
CityShanghai
Period10/10/1012/10/10

Keywords

  • METIS-272300
  • IR-80386
  • Adhesion
  • Discrete element model (DEM)
  • Elasto-plastic deformation
  • Force-laws
  • Friction
  • Granular materials
  • Rolling and torsion resistance

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