Influence of experimental data and FE model on updating results of a brick chimney

  • Authors:

  • T. Aoki;D. Sabia;D. Rivella

  • Affiliations:

  • Graduate School of Design and Architecture, Nagoya City University, Kitachikusa 2-1-10, Chikusa-ku, Nagoya 464-0083, Japan;Department of Structural and Geotechnical Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy;Department of Structural and Geotechnical Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy

  • Venue:
  • Advances in Engineering Software
  • Year:
  • 2008

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Abstract

The present study deals with dynamic identification and model updating of the Howa brick chimney to preserve brick chimneys. From the results of dynamic tests, the fundamental frequencies of the Howa brick chimney are estimated to be about 3.06Hz and 2.69Hz in north-south and east-west directions, respectively. The natural modes and damping factors are identified by ARMAV (auto-regressive moving average vectors) model. The numerical model updating based on IEM (inverse eigensensitivity method) is applied to two models with two updating procedures; using only frequencies and both frequencies and mode shapes. The updating results show the mode shapes are very important to obtain the good results for the numerical model updating. From the results of the numerical model updating, the damaged areas are identified; these are found to correspond well to the position of the cracks of the static collapse test.