Contact models for very loose granular materials

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Abstract

One challenge of todays research on particle systems is the realistic simulation of granular materials consisting of many thousands of particles with peculiar contact interactions. In this study, molecular dynamics (MD, also called discrete element method, DEM) is introduced for the simulation of many-particle systems. A wide class of realistic contact models is presented, involving dissipation, adhesion, plastic deformation, friction, rolling- and torsion resistance. The effect of the contact properties on a simple compaction test is discussed with the goal to achieve as small as possible packing densities. With contact forces only, packing volume fractions down to 0.42 can be achieved, while somewhat longer ranged adhesion forces allow for volume fractions as low as 0.34.
Original languageUndefined
Title of host publicationSymposium on Multiscale Problems in Multibody System Contacts
EditorsPeter Eberhard
Place of PublicationDordrecht, the Netherlands
PublisherSpringer
Pages135-150
Number of pages16
ISBN (Print)978-1-4020-5980-3
DOIs
Publication statusPublished - 2007

Publication series

NameIUTAM Bookseries Vol 1
PublisherSpringer
NumberVol 1
Volume1

Keywords

  • METIS-249796
  • IR-80335

Cite this

Luding, S. (2007). Contact models for very loose granular materials. In P. Eberhard (Ed.), Symposium on Multiscale Problems in Multibody System Contacts (pp. 135-150). (IUTAM Bookseries Vol 1; Vol. 1, No. Vol 1). Dordrecht, the Netherlands: Springer. https://doi.org/10.1007/978-1-4020-5981-0_14