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Smart Structures and Systems Volume 10, Number 6, December 2012 , pages 573-591 DOI: https://doi.org/10.12989/sss.2012.10.6.573 |
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Optimal shape of LCVA for vibration control of structures subjected to along wind excitation |
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Ji-Hun Park and Kyung-Won Min
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| Abstract | ||
| In this study, a procedure to design an optimal LCVA that maximizes the equivalent damping ratio added to the primary structure subjected to along-wind excitation is proposed. That design procedure does not only consider the natural frequency and damping ratio of the LCVA, but also the proportion of the Ushaped liquid, which is closely related to the participation ratio of the liquid mass in inertial force. In addition, constraints to ensure the U-shape of the liquid are considered in the design process, so that suboptimal solutions that violate the optimal tuning law partly are adopted as a candidate of the optimal LCVA. The proposed design procedure of the LCVA is applied to the control of the 76-story benchmark building, and the optimal proportions of the liquid shape under various design conditions are compared. | ||
| Key Words | ||
| liquid column vibration absorber; vibration control; equivalent damping ratio | ||
| Address | ||
| Ji-Hun Park : Department of Architectural Engineering, University of Incheon, Incheon, South Korea Kyung-Won Min : Department of Architectural Engineering, Dankook University, Yongin, South Korea | ||