Magneto-rheological tuned liquid column dampers (MR-TLCDs) for vibration mitigation of tall buildings: Modelling and analysis of open-loop control

J. Y. Wang, Yiqing Ni, J. M. Ko, B. F. Spencer

Research output: Journal article publicationJournal articleAcademic researchpeer-review

51 Citations (Scopus)

Abstract

A novel semi-active tuned liquid column damper using magneto-rheological fluid (MR-TLCD) is devised for wind-induced vibration mitigation of tall building structures. It combines the benefits of magneto-rheological smart materials and tuned liquid column dampers. A mathematical model of the devised MR-TLCD is first established using the parallel-plate theory, and then a method for analyzing stochastic dynamic response of building structures incorporating semi-active MR-TLCDs subjected to random wind excitation is developed by means of the equivalent linearization technique. The open-loop control effectiveness of MR-TLCDs in mitigating wind-induced structural response is studied by referring to a 50-storey high-rise residential building equipped with MR-TLCDs. The analysis results show that MR-TLCDs with optimal parameters are capable of achieving much better vibration mitigation capability than conventional TLCD system.
Original languageEnglish
Pages (from-to)2023-2034
Number of pages12
JournalComputers and Structures
Volume83
Issue number25-26
DOIs
Publication statusPublished - 1 Sep 2005

Keywords

  • High-rise building
  • Magneto-rheological tuned liquid column damper (MR-TLCD)
  • Random vibration
  • Smart fluid
  • Vibration mitigation
  • Wind excitation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Materials Science(all)
  • Mechanical Engineering
  • Computer Science Applications

Cite this