非定常スペクトル解析理論による構造物の動的特性の同定
URI | http://harp.lib.hiroshima-u.ac.jp/it-hiroshima/metadata/8195 | ||||||||||||||||||||||||
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ファイル |
kiyo43131.pdf
( 794.0 KB )
公開日
:2011-02-25
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タイトル |
非定常スペクトル解析理論による構造物の動的特性の同定
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別タイトル |
Identification of Dynamic Characteristics of a Structure Based upon Evolutionary Spectrum Analysis
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著者 |
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キーワード |
evolutionary spectrum analysis
dynamic characteristics
infra structures
identification
seismic ground motion.
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NDC |
524
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抄録 |
This paper presents an identification algorithm of the dynamic characteristics, such as the natural frequency and the damping factor, of a structure deteriorating under natural environment. In this method, both an acceleration record x(t) of a seismic ground motion at the location of the structure and the structural displacement y(t) due to the ground motion are required. In addition, the respective non-stationary spectrum of x(t) and y(t) and the modulating function of x(t) found from evolutionary spectrum analysis are required. The applicability of the proposed method was shown according to the numerical analysis to a one-degree of freedom system. In the case of a multi-degree of freedom system, the dynamic properties of each mode can be obtained by making use of the modal analysis method. However, the identification of the natural modes of the system will be an important task in the future. |
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掲載雑誌名 |
広島工業大学紀要. 研究編
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巻 |
43
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開始ページ |
131
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終了ページ |
139
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出版年月日 |
2009-02
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出版者 |
広島工業大学
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ISSN |
1346-9975
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NCID |
AA11599110
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本文言語 |
日本語
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資料タイプ |
紀要論文
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著者版フラグ |
出版社版
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旧URI | |||||||||||||||||||||||||
区分 |
it-hiroshima
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