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http://dx.doi.org/10.5050/KSNVN.2007.17.9.785

Study of the Non-linearity of Cable Damper to Enhance Damping Performance of Stay Cable  

Seo, Ju-Won (현대건설 기술개발원)
Koh, Hyun-Moo (서울대학교 지구환경시스템공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.17, no.9, 2007 , pp. 785-796 More about this Journal
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.
Keywords
Cable Damper; Nonlinear Damper; Multi-mode Optimum Design;
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  • Reference
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