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 magnitude of the yield stress. Therefore, in this study, we explore the characteristics of ER and MR fluid-based systems on the basis of dynamic range and time response in order to comprehensively understand each system. In doing so, a nondimensional analysis, based on parallel plate geometry, is used to characterize the field-dependent properties of ER and MR fluid-based dampers. Experimental tests are conducted for ER and MR dampers in order to validate our analysis.
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References
1.
Carlson, J.D. , Catanzarite, D.N. and St. Clair, K.A. 1996. “Commercial Magneto-Rheological Fluid Devices,” In: Proceedings of 5th International Conference on ER Fluids, MR Suspension and Associated Technology. pp. 20-28,
2.
Choi, S.B. , Choi, Y.T., Chang, E.G., Han, S.J. and Kim, C.S.1998. “Control Characteristics of a Continuously Variable ER Damper,”Mechatronics, 8:143-161.
3.
Cogdell, J.R.1999. Foundations of Electric Power, Prentice Hall, New Jersey.
4.
Dyke, S.J. , Spencer Jr. B.F., Sain, M.K. and Carlson, J.D.1996. “Modeling and Control of Magnetorheological Dampers for Seismic Response Reduction,”Smart Materials and Structures, 5(5):565-575.
5.
Gavin, H.P. 1997. “Electrorheological Dampers for Structural Vibration Suppression,” PhD Dissertation, Department of Civil and Environmental Engineering, University of Michigan.
6.
Hong, S.R. , Choi, S.B., Choi, Y.T. and Wereley, N.M., 2002. “Comparison of Damping Force Models for an Electrorheological Fluid Damper,”International Journal of Vehicle Dynamics (under review).
7.
Kamath, G.M. , Hurt, M.K. and Wereley, N.M.1996. “Analysis and Testing of Bingham Plastic Behavior in Semi-Active Electrorheological Fluid Dampers,”Smart Materials and Structures, 5:576-590.
8.
Lee, H.G. , Choi, S.B., Han, S.S. and Kim, J.H.2001. “Bingham and Response Characteristics of ER Fluids in Shear and Flow Modes,”International Journal of Modern Physics B, 15(6&7):1017-1024.
9.
Leek, T.H. , Lingard, S., Bulluough, W.A. and Atkin, R.J.1994a. “Hydro-Dynamic Pressure Generation with an Electrorheological Fluid-Part I Unexcited Fluid,”Electrorheological Fluids: Mechanisms, Properties, Technology and Applications, pp. 609-624, World Scientific, New Jersey.
10.
Leek, T.H. , Lingard, S., Bulluough, W.A. and Atkin, R.J.1994b. “Hydro-Dynamic Pressure Generation with an Electrorheological Fluid-Part II Excited Fluid,”Electrorheological Fluids: Mechanisms, Properties, Technology and Applications, pp. 625-642, World Scientific, New Jersey.
11.
Lindler, J.E. and Wereley, N.M. 1999a. “Parametric Analysis and Testing of an Electrorheological Fluid Damper,”Smart Structures and Integrated Systems, Proceedings of SPIE, Vol. 3668, pp. 474-486.
12.
Lindler, J.E. and Wereley, N.M.1999b. “Double Adjustable Shock Absorbers Using Electrorheological Fluid,”Journal of Intelligent Material Systems and Structures, 10(8):652-657.
13.
Lindler, J.E. , Dimock, G.A. and Wereley, N.M. 2000. “Design of a Magnetorheological Automotive Shock Absorber,”Smart Structures and Integrated Systems, Proceedings of SPIE, Vol. 3985, pp. 426-437.
Snyder, R.A. , Kamath, G.M. and Wereley, N.M.2001. “Characterization and Analysis of Magnetorheological Damper Behavior Under Sinusoidal Loading,”AIAA Journal, 39(7):1240-1253.
19.
Sproston, J.L. , Rigby, S.G., Williams, E.W. and Stanway, R.A.1994. “A Numerical Simulation of Electrorheological Fluids in Oscillatory Compressive Squeeze-Flow,”Journal of Physics, D: Applied Physics, 27:338-343.
20.
Wereley, N.M. , Pang, L. and Kamath, G.M.1998a. “Idealized Hysteresis Modeling of Electrorheological and Magnetorheological Dampers,”Journal of Intelligent Material Systems and Structures, 9:642-649.
21.
Wereley, N.M. and Pang, L.1998b. “Nondimensional Analysis of Semi-Active Electrorheological and Magnetorheological Dampers Using Approximate Parallel Plate Models,”Smart Materials and Structures, 7:732-743.
22.
Wereley, N.M. and Lindler, J. 1999. “Quasi-Steady Biviscous Analysis of ER/MR Dampers,” In: Proceedings of the 10th International Conference on Adaptive Structures and Technologies, pp. 82-91, Paris, France.
23.
Wereley, N.M. , Lindler, J. and Choi, Y.T.2002. “Biviscous Damping Behavior in Electrorheological Shock Absorbers,”Smart Materials and Structures, accepted.
Whittle, M. , Atkin, R.J. and Bullough, W.A. 1995. “Dynamics of an Electrorheological Valve.” In: Proceedings of the 5th International Conference on Electro-Rheological Fluids, Magneto-Rheological Suspensions and Associated Technology, pp. 100-117, Sheffield, United Kingdom.
