Strain hardening in liquid-particle suspensions

Pasi Raiskinmäki, Antti Koponen, Markku Kataja

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

The behavior of a liquid-particle suspension induced to sheared motion was analyzed by numerical simulations. When the velocity (strain) of the suspension began to increase, its viscosity first stayed almost constant, but increased then rapidly to a clearly higher level. This increase in viscosity is shown to be related to formation of clusters of suspended particles. Clusters are shown to increase the viscosity by enhanced momentum transfer though clustered particles. This is the mechanism behind the strain-hardening phenomenon observed in small-strain experiments on liquid-particle suspensions.
Original languageEnglish
Article number061402
JournalPhysical review E
Volume72
Issue number6
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

Keywords

  • suspensions
  • work hardening
  • viscosity
  • numerical analysis
  • shear
  • shear properties

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