Shear-Mode Rotary Magnetorheological Damper for Small-Scale Structural Control Experiments
Publication: Journal of Structural Engineering
Volume 130, Issue 6
Abstract
In an attempt to validate the effectiveness of a magnetorheological (MR) damper in controlling the wind-induced response of a building model in a wind tunnel, it is necessary to have a damper which produces a range of small forces so that it can be used to control the light-weight building model. In this study, a small-scale rotary type of MR damper is designed, manufactured, and tested. The damper uses shear-mode behavior of the MR fluids and is designed based on the simple Bingham viscoplastic model. A prototype damper that can produce forces in the order of a few newtons is made and tested in the laboratory. It is found that the Bouc-Wen model, which has been used to emulate linear valve-mode MR dampers, can also portray the hysteretic behavior of the shear-mode rotary damper. A simplified yet relatively accurate inverse dynamic model that can directly relate the damper force to the input voltage is proposed. Experiments demonstrate that a MR damper using this inverse model can closely reproduce prescribed forces. This inverse model provides an alternative means of commanding the MR damper for control applications.
Get full access to this article
View all available purchase options and get full access to this article.
References
Chang, C. C., and Zhou, L.(2002). “Neural network emulation of inverse dynamics for a magnetorheological damper.” J. Struct. Eng., 128(2), 231–239.
Dyke, S. J., Spencer, B. F., Jr., Sain, M. K., and Carlson, J. D.(1996). “Modeling and control of magnetorheological dampers for seismic response reduction.” Smart Mater. Struct., 5, 565–575.
Dyke, S. J., Spencer, B. F., Jr., Sain, M. K., and Carlson, J. D.(1998). “Experimental study of MR dampers for seismic protection.” Smart Mater. Struct., 7(5), 693–703.
Hansen, B. C., Gordaninejad, F., Saiidi, M., and Chang, F. K. (1997). “Control of bridges using magneto-rheological fluid dampers.” Structural health monitoring, F.-K. Chang, ed., Technomic, Lancaster, Pa., 81–90.
Jansen, L. M., and Dyke, S. J.(2000). “Semiactive control strategies for MR dampers: Comparative study.” J. Eng. Mech., 126(8), 795–803.
Johnson, E. A., Christenson, R. E., and Spencer, B. F., Jr. (2000). “Semiactive damping of cables with sag.” Proc., Int. Conf. on Advances in Structural Dynamics, J. M. Ko and Y. L. Xu, eds., Vol. I, Elsevier Service Ltd., Hong Kong, 327–334.
Lord Corporation. (2002). 〈http://www.mrfluid.com/fluid_begin.htm.〉
Lou, W. J., Ni, Y. Q., and Ko, J. M. (2000). “Dynamic properties of a stay cable incorporated with magneto-rheological fluid dampers.” Proc., Int. Conf. on Advances in Structural Dynamics, J. M. Ko and Y. L. Xu, eds., Vol. II, Elsevier Service Ltd., Hong Kong, 1341–1348.
Sahasrabudhe, S., and Nagarajaiah, S. (2000). “Sliding isolated structures with smart dampers.” Proc., Int. Conf. on Advances in Structural Dynamics, J. M. Ko and Y. L. Xu, eds., Vol. I, Elsevier Service Ltd., Hong Kong, 335–339.
Shames, I. H., and Cozzarelli, F. A. (1992). Elastic and inelastic stress analysis, Prentice-Hall, Englewood Cliffs, N.J.
Spencer, B. F., Jr. (1986). Reliability of randomly excited hysteretic structures, Springer, New York.
Spencer, B. F., Jr., Dyke, S. J., Sain, M. K., and Carlson, J. D.(1997). “Phenomenological model for magnetorheological dampers.” J. Eng. Mech., 123(3), 230–238.
Yi, F., Dyke, S. J., Caicedo, J. M., and Carlson, J. D.(2001). “Experimental verification of multi-input seismic control strategies for smart dampers.” J. Eng. Mech., 127(11), 1152–1164.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 130 • Issue 6 • June 2004
Pages: 904 - 911
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Nov 27, 2001
Accepted: Jul 18, 2003
Published online: May 14, 2004
Published in print: Jun 2004
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.