IDENTIFICATION OF STRUCTURAL PARAMETERS USING WAVELET TRANSFORM OF ACCELERATION RESPONSE OBSERVED BY MICROTREMOR

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  • SEGAWA Ryutaro
    Faculty of Engineering and Design, Kyoto Insitute of Technology
  • YAMAMOTO Shizuo
    Dept. of Mechanical and System Engineering, Faculty of Engineering and Design, Kyoto Insitute of Technology
  • SONE Akira
    Dept. of Mechanical and System Engineering, Faculty of Engineering and Design, Kyoto Insitute of Technology
  • MASUDA Arata
    Dept. of Mechanical and System Engineering, Faculty of Engineering and Design, Kyoto Insitute of Technology
  • HATA Hiroaki
    Faculty of Engineering and Design, Kyoto Insitute of Technology

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Other Title
  • 常時微動加速度観測波形のウェーブレット変換によるシステムパラメータの同定
  • 常時微動加速度観測波形のウェーブレット変換によるシステムパラメータの固定
  • ジョウジ ビドウ カソクド カンソク ハケイ ノ ウェーブレット ヘンカン ニ ヨル システム パラメータ ノ コテイ

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Abstract

The method to estimate structural parameters by the wavelet transform of displacement response is proposed by authors. However, vibration is measured by accelerometer generally. Therefore, if it is possible to identify structural parameters by the wavelet transform of only acceleration response, it is very useful. In this paper, the method to identify such structural parameters as spring constant and damping coefficient by the wavelet transform of structural response is presented. To verify the applicability of the proposed method, numerical simulation tests using single degree of freedom system and four degree of freedom system and shaking table tests using single degree of freedom system are performed.

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