Selective controlled base isolation system with magnetorheological dampers

Y. Ribakov, J. Gluck

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)1301-1324
Number of pages24
JournalEarthquake Engineering and Structural Dynamics
Volume31
Issue number6
DOIs
StatePublished - Jun 2002

Keywords

  • Base isolation system
  • Magnetorheological dampers

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