http://swrc.ontoware.org/ontology#Article
2つの1自由度系減衰比を用いた連成系減衰比の簡易推定(機械力学,計測,自動制御)
ja
Structure
Support
Coupled System
Estimation of Dynamic Parameters
Seismic Design
渡邉 鉄也
鞆田 顕章
田中 基八郎
日本機械学會論文集. C編
74
748
2886-2893
2008
2008-1
社団法人日本機械学会
03875024
A number of different structures in industrial facilities are installed on supports. There is the case that the damage occurs by the coupled vibration. The response magnification is obtained from the modal natural frequency and the modal damping ratio of the coupled system in the seismic design. Therefore, the modal natural frequency and the modal damping ratio of the coupled system are required. The natural frequency and the damping ratio of the support and the structure are abtained during the initial design process or by a shaking test. However, the modal natural frequency and the modal damping ratio of the coupled system are not easily obtained. The modal natural frequency of the coupled system can be calculated from theoretical equation, but the modal damping ratio cannot be easily calculated. In the present study, an equation to calculate the modal damping ratio of the coupled system with classic damping is presented. In addition, a simple equation to calculate the modal damping ratio with a non-classic damping system is proposed. This equation is evaluated theoretically. The proposed equation is useful for obtaining the modal damping ratio without performing eigenvalue analysis or a shaking test.
rights: 社団法人日本機械学会rights: 本文データは学協会の許諾に基づきCiNiiから複製したものであるrelation: IsVersionOf:http://ci.nii.ac.jp/naid/110007008094/
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2010-02-24