This paper aims to evaluate the effectiveness of MR damper for vibration mitigation of stay cable under complex wind excitations. The MR damper, RD-1005-03, provided by Lord Company was used, a semi-active control algorithm based on the universal design curve for linear dampers and the bilinear mechanical model of the MR damper was developed, and simulation study was carried out for the cable-MR damper system. Firstly, fluctuating wind field was generated using the method of weighted amplitude wave superposition (WAWS) and Kaimal spectrum and the time-history sample curve of turbulent wind speed of stay cable was obtained. Then the dynamic response of the cable-MR damper system was computed with the proposed semi-active control algorithm applied for mitigating the vibration of stay cable. Finally, the effectiveness of MR damper for controlling cable vibration was assessed by comparing the dynamic responses of stay cable before and after damper installation.

Date Published: 10 April 2013
PDF: 9 pages
Proc. SPIE 8688, Active and Passive Smart Structures and Integrated Systems 2013, 868822 (10 April 2013); doi: 10.1117/12.2009565

Published in SPIE Proceedings Vol. 8688:
Active and Passive Smart Structures and Integrated Systems 2013
Henry Sodano, Editor(s)