Smart Structures and Systems

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Optimal shape of LCVA for vibration control of structures subjected to along wind excitation

  • Park, Ji-Hun (Department of Architectural Engineering, University of Incheon) ;
  • Min, Kyung-Won (Department of Architectural Engineering, Dankook University)
  • Received : 2010.10.28
  • Accepted : 2012.10.03
  • Published : 2012.12.25
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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 U-shaped 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.

Keywords

Acknowledgement

Supported by : Korea Science and Engineering Foundation (KOSEF), Ministry of Land, Transport and Maritime Affairs

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