期刊
JOURNAL OF VIBRATION AND CONTROL
卷 25, 期 21-22, 页码 2695-2705出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1077546319867232
关键词
Tuned sloshing damper; small amplitude vibration control; real-time hybrid testing; low mass ratio; shallow water wave theory
资金
- INSPIRE Programme, Department of Science and Technology (DST), Government of India (GOI) [DST/INSPIRE Fellowship/2011/178]
- Science Foundation of Ireland (SFI) [SFI/12/ISCA/2493]
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-a-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.
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