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Semi-Active TMD Concept for Volgograd Bridge

  • Felix Weber
  • Johann Distl
  • Marcin Maślanka
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

The Volgograd Bridge in Russia is known not only for its record length but also for the large amplitude vibrations induced by wind in May 2010. This paper describes the development of a new semi-active TMD with a magnetorheological damper (MR-STMD) that was installed on the Volgograd Bridge in fall 2011. The main feature of the MR-STMD concept is that the real-time controlled MR damper emulates a controllable stiffness force and a controllable friction force. The controllable stiffness force augments or diminishes the stiffness of the passive springs and thereby tunes the MR-STMD frequency to the actual frequency of the bridge. The controllable friction force generates frequency dependent energy dissipation. The small-scale prototype was experimentally tested on the 19.2 m long Empa bridge for various modal masses and disturbing frequencies. After that, the full-scale MR dampers were tested at Empa by hybrid testing for the expected frequencies and amplitudes of the bridge. Finally, the frequency controllability of one full-scale MR-STMD was verified at the University of the German Armed Forces, Munich. All tests confirm that the new technology can compensate for the frequency sensitivity of passive TMDs and works at high efficiency.

Keywords

Bridge Vibrations Control Semi-active TMD 

Notes

Acknowledgements

This work was supported by Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland, by the industrial partner Maurer Söhne GmbH & Co. KG, Munich, Germany and by AGH University of Science and Technology, Department of Process Control, Krakow, Poland (statutory research funds No. 11.11.130.560).

References

  1. 1.
    Weber F, Maślanka M (2012) Frequency and damping adaptation of a TMD with controlled MR damper. Smart Mater Struct 21(5):055011CrossRefGoogle Scholar
  2. 2.
    Den Hartog JP (1934) Mechanical vibrations. McGraw-Hill, New YorkGoogle Scholar
  3. 3.
    Maślanka M, Weber F (2012) Precise stiffness control with MR dampers and its application to semi-active tuned mass dampers. J Intell Mat Syst Struct, SubmittedGoogle Scholar
  4. 4.
    Weber F (2012) Semi-active vibration absorber based on real-time controlled MR damper. Smart Mater Struct, SubmittedGoogle Scholar
  5. 5.
    Casciati F, Rodellar J, Yildirim U (2012) Active and semi-active control of structures – theory and applications: a review of recent advances. J Intell Mat Syst Struct 23(11):1181–1195CrossRefGoogle Scholar
  6. 6.
    Zhu X, Jing X, Cheng L (2012) Magnetorheological fluid dampers: a review on structure design and analysis. J Intell Mat Syst Struct 23(8): 839–873CrossRefGoogle Scholar

Copyright information

© The Society for Experimental Mechanics, Inc. 2013

Authors and Affiliations

  1. 1.Empa, Swiss Federal Laboratories for Materials Science and TechnologyStructural Engineering Research LaboratoryDuebendorfSwitzerland
  2. 2.Maurer Söhne GmbH and Co. KGMunichGermany
  3. 3.Faculty of Mechanical Engineering and Robotics, Department of Process ControlAGH University of Science and TechnologyKrakowPoland

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