期刊
JOURNAL OF LOW FREQUENCY NOISE VIBRATION AND ACTIVE CONTROL
卷 41, 期 3, 页码 982-995出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/14613484221075445
关键词
Stay cable; vibration control; viscous mass damper; cross-tie; modal damping ratio
类别
资金
- National Natural Science Foundation of China [51878274]
This paper investigates the coupled damping effect of a parallel-connected viscous mass damper (PVMD) and a grounded cross-tie on a single stay cable. The complex wave number equations of the cable-PVMD-cross-tie system are formulated through complex modal analysis. Parametric studies show that the optimal vibration control of the cable can be achieved by optimizing the installation positions of the cross-tie.
Recent studies have shown that the combination of external dampers and cross-ties can overcome their respective deficiencies while retaining their respective merits. Inspired by the advantages of a viscous damper (VD) and a cross-tie on a single stay cable, the coupled damping effect of a parallel-connected viscous mass damper (PVMD) and a grounded cross-tie on a single stay cable is investigated in this paper. The complex wave number equations of the cable-PVMD-cross-tie system are first formulated through the complex modal analysis. Subsequently, the asymptotic and iterative complex wave numbers are compared to evaluate the applicability of the asymptotic and iterative solutions. Furthermore, parametric studies are carried out to investigate the effects of the stiffness coefficients and the installation positions of the cross-tie on the first supplemental modal damping ratio and frequency of the cable. Finally, the installation positions of the cross-tie are optimized to achieve the optimal vibration control of the cable with the PVMD and the cross-tie.
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