Structural analysis based on multiresolution blind system identification algorithm

Gee Pinn James Too, Chih Chung Kenny Wang, Rumin Chao

Research output: Contribution to journalArticlepeer-review

Abstract

A new process for estimating the natural frequency and the corresponding damping ratio in large structures is discussed. In a practical situation, it is very difficult to analyze large structures precisely because they are too complex to model using the finite element method and too heavy to excite using the exciting force method; in particular, the measured signals are seriously influenced by ambient noise. In order to identify the structural impulse response associated with the information of natural frequency and the corresponding damping ratio in large structures, the analysis process, a so-called "multiresolution blind system identification algorithm" which combines Mallat algorithm and the bicepstrum method. High time-frequency concentration is attained and the phase information is kept. The experimental result has demonstrated that the new analysis process exploiting the natural frequency and the corresponding damping ratio of structural response are useful tools in structural analysis application.

Original languageEnglish
Pages (from-to)819-828
Number of pages10
JournalStructural Engineering and Mechanics
Volume17
Issue number6
DOIs
Publication statusPublished - 2004 Jun

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering

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