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Performance of Tuned Liquid Dampers |
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| Authors: | M. J. Tait N. Isyumov A. A. El Damatty |
| Affiliation: | 1Assistant Professor, Dept. of Civil Engineering, McMaster Univ., 1280 Main St. West, Hamilton, ON Canada L8S 4L7 (corresponding author). E-mail: taitm@mcmaster.ca 2Professor Emeritus and Research Director, The Alan G. Davenport Wind Engineering Group, Dept. of Civil and Environmental Engineering, The Univ. of Western Ontario, London, ON Canada N6A 5B8. 3Professor, Dept. of Civil and Environmental Engineering, The Univ. of Western Ontario, London, ON Canada N6A 5B8. |
| Abstract: | This paper investigates the performance of unidirectional and bidirectional tuned liquid dampers (TLDs) under random excitation. The performance of the tuned liquid dampers is measured in terms of efficiency and robustness. A series of experimental tests are conducted on model scale structure-tuned liquid damper systems to evaluate their performance, which is then compared to that of the well known tuned mass damper. The effective damping is calculated for each test conducted and the efficiency and robustness are subsequently examined. The performance of a mistuned TLD is experimentally investigated to highlight the robustness of these passive dynamic vibration absorbers. A nonlinear numerical model is used to conduct an extensive parametric study on the performance of a tuned liquid damper. This study has resulted in the development of performance charts for a tuned liquid damper. These charts allow the efficiency of a tuned liquid damper to be examined for a number of varying parameters, which include the excitation amplitude, water depth, and building frequency. These charts are particularly useful for the initial design of a tuned liquid damper when the precise frequency of the structure is not known. |
| Keywords: | Structural dynamics Structural control Damping Passive control Vibration Sloshing |