Calibration of tuned mass or inerter based vibration absorbers

Abstract eng:
It is becoming increasingly common to use vibration absorbers on civil and mechanical engineering structures, due to increased flexibility of these structures. The flexibility of the structure generates a non-trivial interaction between the structure and the absorber, that may severely influence the optimal calibration of the device. A common calibration procedure for mass and inerter based devices is developed, based on a simplified system in which the effect of the structure flexibility is represented by two contributions: a quasistatic flexibility and a quasi-dynamic inertial term. This system is used to develop an equivalent resonant absorber device, and an explicit calibration procedure is developed, in which the equivalent system is calibrated first, and the equivalent parameters then recalculated for the real device parameters. Examples illustrate the near optimal balance of the frequency response attained by this calibration.

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