System equivalent reduction expansion process: An experimental validation

N. Hoang, A. Friedman, W. Song, J. Char, Z. Feinstein, Y. Fujino, S. J. Dyke

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations

Abstract

The System Equivalent Reduction Expansion Process (SEREP), proposed by O'Callahan et al. in 1989, has been found to be a useful technique for analytical model reduction/expansion. In this study this technique is validated on an experimental model of a cablestayed bridge at Washington University. Different small sets of vertical displacement records of the bridge under impulse hammer excitations have been used to identify frequencies and reduced mode shapes. The shape for a mode of interest is then expanded using SEREP and compared to the reference one identified by using full model data. Good agreement is achieved, implying that using SEREP the reduced model can reproduce the full model quite well. This renders a wide range of applications in structural health monitoring where an accurate analytical model identified from limited measurement data is essential.

Original languageEnglish
StatePublished - 2008
Event11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11 - Taipei, Taiwan, Province of China
Duration: 19 Nov 200821 Nov 2008

Conference

Conference11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11
Country/TerritoryTaiwan, Province of China
CityTaipei
Period19/11/0821/11/08

Keywords

  • Cablestayed bridges
  • Modal identification
  • Model reduction/expansion
  • Structural health monitoring

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