Electrorheological dampers, part ii: Testing and modeling


Journal Article

Electrorheological (ER) materials develop yield stresses on the order of 5-10 kPa in the presence of strong electric fields. Viscoelastic and yielding material properties can be modulated within milliseconds. An analysis of flowing ER materials in the limiting case of fully developed steady flow results in simple approximations for use in design. Small-scale experiments show that these design equations can be applied to designing devices in which the flow is unsteady. More exact models of ER device behavior can be determined using curve-fitting techniques in multiple dimensions. A previously known curve-fitting technique is extended to deal with variable electric fields. Experiments are described which illustrate the potential for ER devices in large-scale damping applications and the accuracy of the modeling technique. © 1996 ASME.

Full Text

Duke Authors

Cited Authors

  • Gavin, HP; Hanson, RD; Filisko, FE

Published Date

  • January 1, 1996

Published In

Volume / Issue

  • 63 / 3

Start / End Page

  • 676 - 682

Electronic International Standard Serial Number (EISSN)

  • 1528-9036

International Standard Serial Number (ISSN)

  • 0021-8936

Digital Object Identifier (DOI)

  • 10.1115/1.2823349

Citation Source

  • Scopus