Electrorheological dampers .2. Testing and modeling
Gavin HP, Hanson RD, Filisko FE
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
63 (3): 676-682 SEP 1996


Abstract:
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 milli-seconds. An analysis of flowing ER materials in the limiting case of fully developed steady flow results in simple approximations for use in design. Small-scall 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.

Addresses:
Gavin HP, DUKE UNIV,DEPT CIVIL & ENVIRONM ENGN,DURHAM,NC 27708
FEMA,DISASTER FIELD OFF,PASADENA,CA 91102
UNIV MICHIGAN,DEPT MAT SCI & ENGN,ANN ARBOR,MI 48109

Publisher:
ASME-AMER SOC MECHANICAL ENG, NEW YORK

IDS Number:
VL348

ISSN:
0021-8936