Squeeze flow magnetorheology

Juan de Vicente, José Antonio Ruiz-López, Efrén Andablo-Reyes, Juan Pablo Segovia-Gutiérrez, Roque Hidalgo-Alvarez

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Abstract

This paper is concerned with an investigation of the rheological performance of magnetorheological fluids under squeeze flow. Preliminary results on Newtonian fluids are first compared to Stefan’s equation. Then, unidirectional monotonic compression tests are carried out in the presence of uniaxial external magnetic fields at slow compression rates under constant volume operation. Results are compared to Bingham plastic, biviscous, and single chain micromechanical squeeze flow models. Measurements using combined deformation modes (compression+small-strain oscillatory shear) suggest a compression-induced shear strengthen effect up to strains of ∼0.5. Particle-level dynamic simulations are in qualitatively good agreement with experimental observations.
Original languageEnglish
Pages (from-to)753-779
Number of pages27
JournalJournal of Rheology
Volume55
Issue number4
DOIs
Publication statusPublished - 31 Jul 2011

Keywords

  • magnetorheological fluids
  • squeeze flow
  • Newtonian fluids

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    de Vicente, J., Ruiz-López, J. A., Andablo-Reyes, E., Segovia-Gutiérrez, J. P., & Hidalgo-Alvarez, R. (2011). Squeeze flow magnetorheology. Journal of Rheology, 55(4), 753-779. https://doi.org/10.1122/1.3574932