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Structural Engineering and Mechanics
  Volume 34, Number 5, March30 2010, pages 611-623
DOI: http://dx.doi.org/10.12989/sem.2010.34.5.611
 


Cable vibration control with a semiactive MR damper-numerical simulation and experimental verification
W.J. Wu and C.S. Cai

 
Abstract
    Excessive stay cable vibrations can cause severe problems for cable-stayed bridges. In this paper a semiactive Magnetorheological (MR) damper is investigated to reduce cable vibrations. The control-oriented cable-damper model is first established; a computer simulation for the cable-damper system is carried out; and finally a MR damper is experimentally used to reduce the cable vibration in a laboratory environment using a semiactive control algorithm. Both the simulation and experimental results show that the semiactive MR damper achieves better control results than the corresponding passive damper.
 
Key Words
    Magnetorheological (MR) damper; cable vibration control; semiactive control.
 
Address
W.J. Wu: Mustang Engineering, Houston, TX 77084, USA
C.S. Cai: Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
 

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