Input energy of base-isolated structures using complex stiffness dampers

Kohju Ikago, Norio Inoue

Research output: Contribution to journalArticlepeer-review

Abstract

This paper shows comparison of earthquake input energy to two types of base-isolated structures. Earthquake input energy for a base-isolated structure incorporated with a magneto-rheological fluid damper using the acceleration reduction control rule is found to be smaller than that of a structure with a viscous damper having the same equivalent damping coefficient. Complex damping is employed to model the magneto-rheological fluid damper and it is shown that the difference of the phase angles of the complex velocity transfer functions for the viscous and complex damped models causes the difference of the earthquake input energy.

Original languageEnglish
Pages (from-to)1095-1100
Number of pages6
JournalJournal of Structural and Construction Engineering
Volume76
Issue number664
DOIs
Publication statusPublished - 2011 Jun 1

Keywords

  • Complex damping
  • Complex-stiffness damper
  • Earthquake input energy
  • Magneto-rheological fluid damper
  • Viscous damper

ASJC Scopus subject areas

  • Architecture
  • Building and Construction

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