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Cable vibration control with a semiactive MR damper-numerical simulation and experimental verification

  • Wu, W.J. (Mustang Engineering, Houston) ;
  • Cai, C.S. (Department of Civil and Environmental Engineering, Louisiana State University)
  • Received : 2008.01.23
  • Accepted : 2009.12.01
  • Published : 2010.03.30

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.

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