Semi-active control of bridges with use of magnetorheological dampers

Anat Ruangrassamee; Kazuhiko Kawashima

doi:10.1117/12.434131

30 July 2001 Semi-active control of bridges with use of magnetorheological dampers

Anat Ruangrassamee, Kazuhiko Kawashima

Proceedings Volume 4330, Smart Structures and Materials 2001: Smart Systems for Bridges, Structures, and Highways; (2001) https://doi.org/10.1117/12.434131
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

This study was conducted to investigate the application of a magnetorheological (MR) damper in the semi-active control of bridge response. A series of cyclic loading tests was carried out on a MR damper under various loading frequencies, loading amplitudes, and current levels. The damping force of the MR damper was idealized by the model composed of friction and viscous elements in parallel. Two algorithms to change damping force according to displacement or velocity were investigated. It is found that the commanded damping force can be realized by the MR damper. However, discrepancy of damping force is observed, especially when the rate of change of the damping force is high. The shaking table test was conducted on a model bridge with the MR damper to investigate the effectiveness of the control algorithms.

Citation Download Citation

Anat Ruangrassamee and Kazuhiko Kawashima "Semi-active control of bridges with use of magnetorheological dampers", Proc. SPIE 4330, Smart Structures and Materials 2001: Smart Systems for Bridges, Structures, and Highways, (30 July 2001); https://doi.org/10.1117/12.434131

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