The role of elasticity in thixotropy: Transient elastic stress during stepwise reduction in shear rate

Jiho Choi, Matthew Armstrong, Simon A. Rogers

Research output: Contribution to journalArticlepeer-review

Abstract

Despite the wide-spread use and importance of thixotropic materials, accurate theoretical descriptions are still limited to a handful of model transient flow conditions. We employ an iterative series of tests to experimentally probe the complex dynamics exhibited by thixotropic materials. We use flow cessation tests to identify transient elastic stresses during stress jump tests. It is shown that the evolution of the elastic stress closely follows that of total stress in the series of stress jump tests, indicating that elasticity is a significant contributor to thixotropy.

Original languageEnglish (US)
Article number033112
JournalPhysics of fluids
Volume33
Issue number3
DOIs
StatePublished - Mar 1 2021

ASJC Scopus subject areas

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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