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Zili Zhang

On the nonlinear performance of a tuned sloshing damper under small amplitude excitation

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  • Anuja Roy, Indian Institute of Engineering Science and Technology
  • ,
  • Zili Zhang
  • Aparna (Dey) Ghosh, Indian Institute of Engineering Science and Technology
  • ,
  • Biswajit Basu, Trinity College Dublin

This paper explores the potential of a tuned sloshing damper (TSD) in the control of small amplitude vibrations, which is often important from serviceability considerations, through the use of a relatively small mass ratio of the damper liquid. To investigate the nonlinear behavior of the TSD, real-time hybrid testing is conducted in which a single rectangular tank containing water constitutes the prototype TSD. The structure is modeled as a multi-degree-of-freedom system. Two different base input motions, namely harmonic and synthetically generated broad-banded input, are considered. The sensitivity of the TSD performance to tuning ratio vis-à-vis low mass ratio is studied. The experimental results are compared with those obtained from a numerical study carried out using the shallow water wave theory-based nonlinear, semi-empirical model, for the simulation of the sloshing motion of the TSD liquid (water). Results indicate that in the tuned condition, even with a low mass ratio, the TSD is highly effective in the suppression of the small amplitude vibrations, which is underestimated by the simulation model.

Original languageEnglish
JournalJournal of Vibration and Control
Pages (from-to)2695-2705
Number of pages11
Publication statusPublished - Nov 2019

    Research areas

  • Tuned sloshing damper, low mass ratio, real-time hybrid testing, shallow water wave theory, small amplitude vibration control, CONTROLLING EARTHQUAKE RESPONSE, MOTION, TIME HYBRID SIMULATION, LIQUID COLUMN DAMPERS, VIBRATION CONTROL, TLD

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