About contacts of adhesive, elasto-plastic, frictional powders,

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

10 Downloads (Pure)

Abstract

Granular materials can be studied in a split-bottom ring shear cell geometry, where they show wide shear bands under slow, quasi-static, large deformation. The contact models are at the basis of their interesting collective behavior and flow-rheology as well the core ingredient for the discrete element method (DEM). The contact mechanics used involves elasto-plastic, viscous, frictional, and torque contributions. From a single simulation only, by applying time- and (local) space-averaging, and focusing on the regions of the system that experienced considerable deformations, the critical-state yield stress (termination locus) can be obtained. It is close to linear, for non-cohesive granular materials, and nonlinear with peculiar pressure dependence, for adhesive powders – due to the nonlinear dependence of the contact adhesion on the confining forces. Introduction
Original languageEnglish
Title of host publicationNew Trends in Contact Mechanics
Place of PublicationCargese, Corsica
PublisherLMA
Pages19-22
Number of pages4
Publication statusPublished - 27 Mar 2012
EventEuromech 514: New Trends in Contact Mechanics - Cargese, Corsica, Cargese, Corsica
Duration: 27 Mar 201231 Mar 2012

Publication series

Name
PublisherLMA

Conference

ConferenceEuromech 514
CityCargese, Corsica
Period27/03/1231/03/12
Other2012-03-27 - 2012-03-31

Keywords

  • METIS-294190
  • IR-80394

Fingerprint Dive into the research topics of 'About contacts of adhesive, elasto-plastic, frictional powders,'. Together they form a unique fingerprint.

Cite this