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http://dx.doi.org/10.5000/EESK.2009.13.4.047

Design Parameter Identification Using Transfer Function of Liquid Column Vibration Absorber (LCVA)  

Lee, Sung-Kyung (단국대학교 건축공학과)
Min, Kyung-Won (단국대학교 건축공학과)
Chung, Hee-San (단국대학교 건축공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.13, no.4, 2009 , pp. 47-55 More about this Journal
Abstract
The purpose of this study is to verify the transfer function of input acceleration and output control force by linearizing a velocity-dependent damping term of Liquid Column Vibration Absorber (LCVA). Analytical and experimental research is conducted to identify natural frequency, damping ratio and participated mass ratio of LCVA with various section ratios of vertical and horizontal areas. Findings obtained experimentally by the shaking table test are compared with analytical findings using optimization technique with constraints. The results indicate that the level of liquid and section ratio of LCVA affect the characteristics of damping ratio and mass ratio. Damping and mass ratio increase as the section of vertical column of LCVA decreases, due to turbulence in the elbow of LCVA.
Keywords
Liquid column vibration absorber; Dynamic characteristics; System identification; Natural frequency; Damping ratio; Mass ratio; Shaking table test;
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Times Cited By KSCI : 2  (Citation Analysis)
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