A comparative study of multi-mode cable vibration control using viscous and viscoelastic dampers through field tests on the Sutong Bridge

2020 ◽  
Vol 224 ◽  
pp. 111226
Author(s):  
Lin Chen ◽  
Limin Sun ◽  
Yuyuan Xu ◽  
Fangdian Di ◽  
Yingmei Xu ◽  
...  
Keyword(s):  
Comparative Study ◽  
Vibration Control ◽  
Field Tests ◽  
Cable Vibration ◽  
Viscoelastic Dampers ◽  
Sutong Bridge ◽  
Multi Mode

Optimal Design of Dampers for Multi-Mode Cable Vibration Control Based on Genetic Algorithm

2021 ◽  
pp. 2150058
Author(s):  
Fangdian Di ◽  
Lin Chen ◽  
Limin Sun
Keyword(s):  
Genetic Algorithm ◽  
Vibration Control ◽  
Performance Optimization ◽  
Negative Stiffness ◽  
Stay Cable ◽  
Control Effect ◽  
Cable Vibration ◽  
Cable Vibrations ◽  
Damper Design ◽  
Multi Mode

Cables in cable-stayed bridges are subjected to the problem of multi-mode vibrations. Particularly, the first ten modes of long cables can have a frequency less than 3[Formula: see text]Hz and hence are vulnerable to wind-rain induced vibrations. In practice, mechanical dampers are widely used to mitigate such cable vibrations and thus they have to be designed to provide sufficient damping for all the concerned vibration modes. Meanwhile, the behaviors of practical dampers are complicated and better to be described by mechanical models with many parameters. Furthermore, additional mechanical components such as inerters and negative stiffness devices have been proposed to enhance the damper performance on cables. Therefore, it is increasingly difficult to optimize the damper parameters for suppressing multi-mode cable vibrations. To address this issue, this study proposes a novel damper design method based on the genetic algorithm (GA). The procedure of the method is first introduced where the damper performance optimization is formulated as a single-objective multi-parameter optimization problem. The effectiveness of the method is then verified by considering a viscous damper on a stay cable. Subsequently, the method is applied to optimize three typical dampers for cable vibration control, i.e. the positive stiffness damper, the negative stiffness damper, and the viscous inertial mass damper. The results show that the GA-based method is effective and efficient for cable damper design to achieve best multi-mode control effect and it is particularly useful for dampers with more parameters.

Investigation of Locking Force of Stay Cable Vibration Control Using Magneto-Rheological Fluid Damper

Aerospace ◽  
2006 ◽  
Author(s):  
Liu Min ◽  
Vineet Sethi ◽  
Gangbing Song ◽  
Hui Li
Keyword(s):  
Vibration Control ◽  
Smart Materials ◽  
Mr Damper ◽  
Pole Placement ◽  
Stay Cable ◽  
Cable Vibration ◽  
Bridge Model ◽  
Mode Vibration ◽  
Magneto Rheological ◽  
Multi Mode

This paper analyzes the locking force of a stay cable equipped with a Magneto-rheological (MR) damper. For the single mode vibration of the stay cable, the formula of the locking force is derived and the important factors that affect the locking force are analyzed. The experimental investigations of the locking force of the stay cable vibration control are carried out on a cable-stayed bridge model equipped with an MR damper to verify of the computational locking force in the Smart Materials and Structures Laboratory at University of Houston. For the multi-mode vibration of the stay cable, the modal shapes of the stay cable vibration are estimated by utilizing a pole placement observer using the acceleration values at selected locations of the stay cable and the locking forces of the stay cable in multi-mode vibration are numerically obtained. In all experimental cases, the locking forces based on the analytical and numerical formulas approximately match the experimental results.

Multimode cable vibration control using a viscous‐shear damper: Case studies on the Sutong Bridge

2020 ◽  
Vol 27 (6) ◽  
Author(s):  
Lin Chen ◽  
Fangdian Di ◽  
Yuyuan Xu ◽  
Limin Sun ◽  
Yingmei Xu ◽  
...  
Keyword(s):  
Vibration Control ◽  
Case Studies ◽  
Cable Vibration ◽  
Viscous Shear ◽  
Sutong Bridge

Modeling and Evaluation of Magnetorheological Dampers with Fluid Leakage for Cable Vibration Control

2021 ◽  
Vol 26 (2) ◽  
pp. 04020119
Author(s):  
Peng Zhou ◽  
Min Liu ◽  
Weiming Kong ◽  
Yingmei Xu ◽  
Hui Li
Keyword(s):  
Vibration Control ◽  
Magnetorheological Dampers ◽  
Cable Vibration ◽  
Fluid Leakage

Cable Vibration Control Supported by SOC Architecture

2009 ◽  
Vol 42 (13) ◽  
pp. 141-146
Author(s):  
Maciej Rosół ◽  
Krzysztof Kołek
Keyword(s):  
Vibration Control ◽  
Cable Vibration
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