Magneto-rheological squeeze-film damper for semi-active control of rotor vibrations

Kari Tammi, Gregory Buckner, Juha Kortelainen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    This paper summarizes the design, fabrication and experimental evaluation of an adjustable squeeze-film damper to control radial vibration on a rotating shaft. Conventional squeeze-film dampers are widely used on high speed rotors to provide radial damping. For this semi-active design, controllability is realized by replacing the conventional damping fluid with a magneto-rheological (MR) fluid. The shear strength of the MR fluid can be adjusted in realtime by manipulating voltage to electromagnets which surround the bearing. Experimental evaluations are conducted on a highspeed (0-10000 rpm) test rig. The results show that the damper has a significant effect on the rotor responses near resonance regions
    Original languageEnglish
    Title of host publicationProceedings of the 9th International Conference on Motion and Vibration Control (MOVIC 2008)
    Number of pages10
    Publication statusPublished - 2008
    MoE publication typeA4 Article in a conference publication


    • magneto
    • rheological
    • squeeze
    • film
    • control
    • rotor
    • vibration


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