ランダム加力による粘弾性ダンパーの振動数依存性の定量化

書誌事項

タイトル別名
  • QUANTIFICATION OF FREQUENCY-DEPENDENT PROPERTY OF VISCO-ELASTIC DAMPER BY RANDOM LOADING METHOD
  • ランダム カリョク ニヨル ネンダンセイ ダンパー ノ シンドウスウ イゾンセ

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The purpose of this paper is to present a simple and reliable method to represent frequency-dependent mechanical properties of a linear visco-elastic damper by generalized Maxwell model or Voigt model. The paper first deals with an experiment of random loading to a damper. Then, the Fourier Transform to both input displacement and output load is performed for complex modulus and complex compliance, from which equivalent stiffness and equivalent damping coefficient of the damper are obtained. Finally, the accuracy of the method is confirmed by comparing experimental and analytical hysteresis loops of the damper subjected to a random displacement simulating the one expected during an intense earthquake.

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