Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/40836
Title: Modeling of a full-scale MR damper and its application in open-loop vibration control of stay cables
Authors: Ko, JM 
Duan, YF
Ni, YQ 
Keywords: Modeling
Vibration control
Switches
Issue Date: 2005
Publisher: SPIE-International Society for Optical Engineering
Source: Proceedings of SPIE : the International Society for Optical Engineering, 2005, v. 5765, 690 How to cite?
Journal: Proceedings of SPIE : the International Society for Optical Engineering 
Abstract: A parameter-adaptive three-element model is first developed for a full-scale MR damper based on laboratory tests. The parameters of the model are represented by a set of empirical formulae in terms of displacement amplitude, voltage input, and excitation frequency. The model is then incorporated into the governing equation of cable-damper system for investigation of open-loop vibration control of stay cables in a cable-stayed bridge, by installing the dampers in single- and twin-damper setups respectively. The concept of optimal voltage/current input achieving the maximum damping for the system is put forward and verified. Multi-mode and multi-switch open-loop control methods in single- and twin-damper setups are then developed and a procedure for determining optimal geometric configuration of the twin-damper setup is proposed. The developed analytical formulations and design methods contribute to consummating the design specifications/guidelines for open-loop cable vibration control using MR dampers.
Description: Smart Structures and Materials 2005 : Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace System, San Diego, California, USA, 7-10 March 2005
URI: http://hdl.handle.net/10397/40836
ISSN: 0277-786X
EISSN: 1996-756X
DOI: 10.1117/12.599706
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