Estimation of equivalent permeability in magnetorheological fluid considering cluster formation of particles

This paper describes a simulation method for the equivalent magnetic permeability of mangetorheological (MR) fluids considering cluster formation of suspended particles. The cluster formation under a magnetic field is simulated by cellular automata (CA.). Simulated cluster structures are qualitatively equivalent to those observed experimentally. Considering this structure, magnetic permeability analysis is conducted on a representative MR fluid by the finite element method. The equivalent permeability in the MR fluid was obtained from the average magnetic flux density and field. The time evolution of the magnetic characteristics of the MR fluid is shown to correspond to the time evolution of cluster formation.

Full Text

Duke Authors

Cited Authors

  • Shiraishi, T; Morishita, S; Gavin, HP

Published Date

  • 2004

Published In

Volume / Issue

  • 71 / 2

Start / End Page

  • 201 - 207

International Standard Serial Number (ISSN)

  • 0021-8936

Digital Object Identifier (DOI)

  • 10.1115/1.1667530