THE PERFORMANCE OF AN ELECTRORHEOLOGICAL FLUID IN DYNAMIC SQUEEZE FLOW UNDER CONSTANT VOLTAGE AND CONSTANT FIELD

Citation
Ak. Elwahed et al., THE PERFORMANCE OF AN ELECTRORHEOLOGICAL FLUID IN DYNAMIC SQUEEZE FLOW UNDER CONSTANT VOLTAGE AND CONSTANT FIELD, Journal of physics. D, Applied physics (Print), 31(20), 1998, pp. 2964-2974
Citations number
21
Categorie Soggetti
Physics, Applied
ISSN journal
00223727
Volume
31
Issue
20
Year of publication
1998
Pages
2964 - 2974
Database
ISI
SICI code
0022-3727(1998)31:20<2964:TPOAEF>2.0.ZU;2-W
Abstract
This paper is concerned with an experimental investigation in which an electrorheological (ER) fluid is applied to control vibration. The fl uid is sandwiched between two planar electrodes, the upper one fixed w hile the lower one is subjected to an oscillatory sinusoidal motion an d is energized either by a constant voltage or by a constant field. In this dynamic squeeze flow it is seen that the force transmitted acros s the fluid is greater when the applied electrical field is maintained at a constant level, controlled with reference to the instantaneous g ap between the electrodes. In addition, we compare the experimental re sults with those from an existing theoretical model in which the fluid is assumed to have a bi-viscous rheological characteristic.