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Proceedings Paper

Assessment of time response characteristics of electrorheological and magnetorheological dampers
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Paper Abstract

Electrorheological (ER) and magnetorheological (MR) fluids show similar field-dependent rheological characteristics from a bulk fluid perspective. However, the implementation of ER and MR fluids in devices may require different strategies because of the inherent properties of ER and MR fluids such as density, viscosity and the strength of the yield stress. Therefore, in this study, we explore the dynamic performance ranges and time response characteristics of ER and MR fluid-based systems in order to comprehensively understand each system. So far, quasi-steady fluid flow model has been widely used in the performance evaluation of ER and MR fluid-based systems. However, the quasi-steady fluid flow model can predict the dynamic performance range of the system, but does not give any information about time response characteristics of the system. Moreover, research on comparative analysis between ER and MR fluid-based systems is considerably rare. Therefore, in this study, comparative analysis for the characteristics of ER and MR fluid-based systems is undertaken based on considering the time response phenomena. For doing so, a set of nondimensional analysis based on parallel plate geometry to characterize the field-dependent properties of ER and MR fluid-based systems is developed and experimental test for ER and MR dampers are done in order to evaluate the validity of the analysis.

Paper Details

Date Published: 2 July 2001
PDF: 11 pages
Proc. SPIE 4331, Smart Structures and Materials 2001: Damping and Isolation, (2 July 2001); doi: 10.1117/12.432693
Show Author Affiliations
Young-Tai Choi, Univ. of Maryland/College Park (United States)
Norman M. Wereley, Univ. of Maryland/College Park (United States)


Published in SPIE Proceedings Vol. 4331:
Smart Structures and Materials 2001: Damping and Isolation
Daniel J. Inman, Editor(s)

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