Steady-state dynamic response of structures with nonlinear hysteretic isolators

C. W. Wong, Yiqing Ni, J. M. Ko

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)

Abstract

In a previous paper, a mathematical model of a nonlinear hysteretic vibration isolator, with amplitude-dependent parameters, was established based on experimental study. In this paper, the corresponding multi-harmonic steady-state response analysis is addressed. The computational method is based on the Galerkin/Levenberg-Marquardt approach, in which the frequency/time domain alternation and FFT procedures, as well as numerical search in the transformed time domain, are introduced. The response features of this hysteretic model are identified. Then, the steady-state responses of base-isolated structures are analyzed by the proposed method with the use of modal partial decoupling. Analytical responses of a vibration-isolated frame are compared favorably with experimental findings.
Original languageEnglish
Pages (from-to)63-78
Number of pages16
JournalModal analysis
Volume8
Issue number1
Publication statusPublished - 1 Jan 1993

ASJC Scopus subject areas

  • Engineering(all)

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