Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Study of the Non-linearity of Cable Damper to Enhance Damping Performance of Stay Cable

사장교 케이블의 감쇠성능 향상을 위한 댐퍼의 비선형성 연구

  • 서주원 (현대건설 기술개발원) ;
  • 고현무 (서울대학교 지구환경시스템공학부)
  • Published : 2007.09.20
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Abstract

This study offers a design procedure of optimum cable damper for multi-mode vibration control with nonlinear damper and also investigates the relation between mode and amplitude dependency. The proposed multi-mode damping index, which is defined as a potential energy loss ratio of cable vibration, is a main component of optimization problem of optimum nonlinear damper. In order to include the amplitude dependency of nonlinear damper, three types of multi-mode patterns such as ambient vibration, support excitation and rain-wind induced vibration are assumed. The optimum damper exponent depends on amplitude patterns. In case of ambient vibration, optimum factor is less than 0.5 and in case of support excitation or rain-wind induced vibration it is between 0.5 and 1.0.

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References

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