Frictional powders: Ratchetting under periodic strain in 3D (CD rom Paper no. S 20-5)

Stefan Luding, C.T. David, R. Garcia-Rojo, H.J. Herrmann

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The mechanical response of grains under quasi-static cyclic loading is studied by means of a threedimensional Molecular Dynamics scheme. The response of the system is characterized by an accumulation of plastic deformation with increasing number of cycles. From the (deviatoric) stressstrain relation a ratchet-like behavior is observed: Increasing the coefficient of friction leads to a transition from ratcheting to shake-down, i.e., the accumulation of strain stops. The strain rate shows a sharp transition when friction is increases above a certain value, whereas the fraction of sliding contacts shows a smooth, continuous transition, indicating that both effects are decoupled.
Original languageUndefined
Title of host publicationPARTEC 2007, 27-29 March 2007, Nuremberg, Germany
EditorsW. Peukert, C. Schreglmann
Place of PublicationNuernberg, Germany
PublisherInstitute of Particle Technology, University of Erlangen.remberg and NurnbergMesse, Germany
Number of pages4
Publication statusPublished - 27 Mar 2008
EventInternational Congress on Particle Technology, PARTEC 2007 - Nuremberg, Germany
Duration: 27 Mar 200729 Mar 2007

Publication series

PublisherUniversity of Erlangen-Nuremberg, Institute of Particle Technology


ConferenceInternational Congress on Particle Technology, PARTEC 2007
Abbreviated titlePARTEC


  • IR-80327
  • METIS-249793

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