ABSTRACT
ABSTRACT: In this paper, a mathematical model of Stockbridge damper dynamic characteristics is established, theoretical derivation and calculation programs for the power characteristics, and simulation on power characteristics of FD-1 vibration damper tested by force-amplitude and force-velocity methods are completed. The results shows: vibration damper consumes more power in the case of force-amplitude throughout the whole high-frequency range, which easily leads to the response amplitude of vibration damper approaching or exceeding the elastic deformation limit of steel strand, and wears the steel strand excessively. By contrast, the force-velocity method makes less damage to the steel strand, by which the power calculated is closer to the actual operation of the vibration damper, proved to be an improvement. Moreover, the simulation program compiled in this paper can estimate the power characteristics curve in an absence of a specific vibration damper, which provides an effective analytical tool for the anti-vibration performance prediction and design optimization of Stockbridge damper, compared with the test methods.
