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Proceedings Paper

Maximum modal damping of cable space vibration control with viscous damper in cable-stayed bridge
Author(s): Bing Nan Sun; Shuid Sheng Chen; Wen Juan Lou
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Paper Abstract

Taking the bending stiffness, cable static sag and cable inclinded angle into consideration, the equations of space vibration of the cable-damper system are formulted in this paper. Applying the variable separation strategy and center difference method, the partial differential equations are discrete in space and a set of complex eigenvalue equations are sovled by state space method. Then both the maximum modal damping ratio and the optimal damper parameters are obtained. Some typical stay cables are investigated for both the in-plane and out-plane vibration modes with different cable parameters and damper parameters. The results show the damping ratio for the first in-plane vibration modes with different cable parameters and damper parameters. The resutls show the dampingn ratio for the first in-plane mode is significantly affected by the cable static sag only, but those for the other modes are affected slightly, and cable static sag do not affect the optimal damper parameter for all modes. However the bending stiffness will changes both the maximum modal damping ratios and the optimal damper parameters. Some valuable suggestions are proposed for the optimal damper design.

Paper Details

Date Published: 1 August 2003
PDF: 11 pages
Proc. SPIE 5049, Smart Structures and Materials 2003: Modeling, Signal Processing, and Control, (1 August 2003); doi: 10.1117/12.482698
Show Author Affiliations
Bing Nan Sun, Zhejiang Univ. (China)
Shuid Sheng Chen, Zhejiang Univ. (China)
Wen Juan Lou, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 5049:
Smart Structures and Materials 2003: Modeling, Signal Processing, and Control
Ralph C. Smith, Editor(s)

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