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http://dx.doi.org/10.5000/EESK.2005.9.2.001

Performance Evaluation of MR Damper using Equivalent Linearization Technique  

Lee, Sang-Hyun (서울대학교 공학연구소)
Min, Kyung-Won (단국대학교 건축대학 건축공학과)
Lee, Myoung-Kyu (단국대학교 건축대학 건축공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.9, no.2, 2005 , pp. 1-6 More about this Journal
Abstract
The purpose of this paper is to evaluate the performance of an MR fluid damper for seismic vibration control of a structure in terms of equivalent linear damping based on linearization technique and to experimentally verify the results from linearization technique by comparing them to those from system identification testing of a building structure with the MR damper. First, among various models for the MR damper, the equivalent damping is estimated for the Bingham model which is mathematically simple. Second, the transfer function of a building structure with the MR damper is obtained by performing shaking table tests and the damping matrices of the structure are constructed using the modal information obtained by the transfer function. It is observed that the damping mathematically estimated using linearization technique for the Bingham model matches well with the damping coefficient experimentally obtained by system identification.
Keywords
MR damper; linearization technique; equivalent damping; system identification; Bingham model;
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