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Selective controlled base isolation system with magnetorheological dampers
Author(s) -
Ribakov Y.,
Gluck J.
Publication year - 2002
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.164
Subject(s) - magnetorheological fluid , damper , base isolation , structural engineering , engineering , isolation (microbiology) , control theory (sociology) , base (topology) , magnetorheological damper , computer science , control (management) , mechanical engineering , mathematics , mathematical analysis , microbiology and biotechnology , frame (networking) , biology , artificial intelligence
A base isolation system composed of low‐damping isolation bearings and magnetorheological (MR) fluid dampers is described. The MR fluid changes its properties under the influence of a magnetic field resulting in a damper with characteristics that may be modified in real time. This feature enables optimal control under changing excitations in a stable and cost‐effective manner. The voltage is applied according to a selective control strategy. According to the proposed approach the dampers are activated only within a given range of the base displacements. The selective control improves the efficiency of the system and significantly reduces the control forces required for an optimal structural behaviour. Models of five‐ and eight‐storey buildings are used to study the efficiency of the proposed system. Copyright © 2002 John Wiley & Sons, Ltd.