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A Low Force Magneto-rheological (MR) Fluid Damper: Design, Fabrication and Characterization
Gokhan Aydar
Mechanical Engineering Department University of Nevada, Reno, Reno, NV, USA
Cahit A. Evrensel
Mechanical Engineering Department University of Nevada, Reno, Reno, NV, USA, cahit{at}unr.edu
Faramarz Gordaninejad
Mechanical Engineering Department University of Nevada, Reno, Reno, NV, USA
Alan Fuchs
Chemical Engineering Department University of Nevada, Reno, Reno, NV, USA
This study focuses on the theoretical analysis, design, fabrication and characterization of a small Magneto-Rheological (MR) fluid damper. It can be potentially applied to a horizontal axis, front-loading washing machine. In such washing machines, although washing cycle is slow, spin cycle is much faster. During acceleration from washing cycle to spin cycle, the tub passes through its resonant speed requiring relatively high damping. On the other hand, high damping results in increased force transmission to the housing and noise at high-speed spin cycle. Controllability of the MR fluid damper allows adjustment of damping requirements for different cycles and helps to reduce the noise at high speed spin cycle while limiting the tub motion at resonance. A patented geometry of an MR valve developed by Composite and Intelligent Materials Laboratory at the University of Nevada, Reno is used as the basis of this new design to satisfy the requirements of the application. Fabricated prototype damper is characterized using harmonic displacement input. Test results are in good agreement with the theoretical predictions and design values.
Key Words: magnetorheological (MR) fluid • controllable damper • MR damper • washing machine.
References
- Carlson, J.D. 1998. ``New Cost Effective Braking, Damping and Vibration Control Devices Made with MR Fluids,'' Materials Technology, 13:96—99.
- Carlson, J.D. 1999. ``Low-Cost MR Fluid Sponge Devices,'' Journal of Intelligent Materials, Systems and Structures, 10:589—594.[Abstract/Free Full Text]
- Carlson, J.D. 2000. ``Washing Machine Having a Controllable Field Responsive Damper,'' U.S. Patent #6151930.
- Carlson, J.D. 2001. ``Sponge Wrings Cost From MR-Fluid Devices,'' Machine Design, 73(4): 73—76.
- Carlson, J.D. 2002a. ``Apparatus Including a Matrix Structure and Apparatus,'' U.S. Patent #6340080.
- Carlson, J.D. 2002b. ``Magnetically Actuated Motion Control Device,'' U.S. Patent #6378671.
- Carlson, J.D. 2002c. ``Controllable Medium Device and Apparatus Utilizing Same,'' U.S. Patent #6394239.
- Choi, Y.T., Wereley, N.M. and Jeon, Y.S. 2005. ``Semi-Active Vibration Isolation Using Magnetorheological Isolators,'' AIAA Journal of Aircraft., 42(5):1244—1251.
- Chrzan, M.J. and Carlson, J.D. 2001. ``MR Fluid Sponge Devices and Their Use in Vibration Control of Washing Machines,'' in: Proceedings of the SPIE, Daniel J. Inman, (ed.), 4331: 370—378.
- Dogruer, U., Gordaninejad, F. and Evrensel, C.A. 2007. ``A MagnetoRheological Fluid Damper for High-Mobility Multi-purpose Wheeled Vehicle (HMMWV),'' Journal of Intelligent Material Systems and Structures. First published on July 10, 2007 as doi:10.1177/1045389X07078213.
- Durazzani, P. and Valent, L. 1999. ``Method for Providing Active Damping of the Vibrations Generated by the Washing Assembly of Washing Machines and Washing Machine Implementing Said Method,'' U.S. Patent #5907880.
- Fuchs, A., Gordaninejad, F., Blattman, D. and Hamann, G. 2003. ``Magnetorheological Polymer Gels,'' U.S. Patent #6,527,972.
- Fuchs, A., Xin, M., Gordaninejad, F., Wang, X., Hitchcock, G., Gecol, H., Evrensel, C. and Karol, G. 2004. ``Development and Characterization of Novel Magneto-Rheological Polymeric Gels,'' Journal of Applied Polymer Science, 92(2):1176—1182.
- Gordaninejad, F. and Breese, D.G. 2000. ``Magneto-Rheological Fluid Dampers,'' U.S. Patent # 6,019,201.
- Gordaninejad, F. and Kelso, S.P. 2000. ``Fail-Safe MagnetoRheological Fluid Dampers for Off-Highway, High-Payload Vehicles,'' Journal of Intelligent Material System and Structures, 11(5):395—406.[Abstract/Free Full Text]
- Hopkins, P.N. Fehring, J.D., Lisenker, I., Longhouse, R.E., Kruckemeyer, W.C., Oliver, M.L., Robinson, F.M. and Alexandridis, A.A. 2001. ``Magnetorheological Fluid Damper,'' U.S. Patent #6311810.
- Kavlicoglu, B., Gordaninejad, F., Evrensel, C.A., Cobanoglu, N., Xin, M., Heine, C., Fuchs, A. and Korol, G. 2002. ``A High-Torque Magneto-Rheological Fluid Clutch,'' Proceedings of SPIE Conference on Smart Materials and Structures, 4697:393—400.
- Qing, S. and Ke, Z. 2002. ``New Type Magnetorheological Damper and Its Application on Semi-Active Control of Structural Seismic Response,'' Progress in Safety Science and Tech., 3:376—382.
- Rabinow, J. 1948. ``The Magnetic Fluid Clutch,'' Transactions of the American Institute of Electrical Engineers, 67:1307—1315.
- Sandrin, G. and Carlson, J.D. 2001. ``Controllable Device Having a Matrix Medium Retaining Structure,'' U.S. Patent #6202806.
- Sassi, S. and Cherif, K. 2005. ``An Innovative Magnetorheological Damper for Automotive Suspension: From Design to Experimental Characterization,'' Smart Materials and Structures, 14:811—822.[CrossRef]
- Symans, M.D. and Constantinou, M.C. 1997. ``Experimental Testing and Analytical Modeling of Semi-Active Fluid Dampers for Seismic Protection,'' Journal of Intelligent Materials, Systems and Structures, 8:644—656.[Abstract]
- Wilson, M., Fuchs, A. and Gordaninejad, F. 2002. ``Development and Characterization of Magnetorheological Polymer Gels,'' J. Appl. Polym. Sci., 84:2724—2733.
Journal of Intelligent Material Systems and Structures, Vol. 18, No. 12,
1155-1160 (2007)
DOI: 10.1177/1045389X07083138
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