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標題: | Experimental study on adjustable tuned mass damper to reduce floor vibration due to machinery | 作者: | Chang, M.L. 林其璋 Lin, C.C. Ueng, J.M. Hsieh, K.H. Wang, J.F. |
關鍵字: | vertical tuned mass damper;machinery;floor vibration;field testing;buildings | Project: | Structural Control & Health Monitoring | 期刊/報告no:: | Structural Control & Health Monitoring, Volume 17, Issue 5, Page(s) 532-548. | 摘要: | This paper deals with the optimum design of a tuned mass damper (TMD) for the mitigation of machine-induced vertical vibration of structures. Theoretically, a TMD without damping tuning to the machine operating frequency will make optimum control performance. Considering zero damping is impossible, a new field-based design procedure and an adjustable vertically moving TMD (VTMD) are proposed. The VTMD is composed of variable mass blocks and changeable springs. A prototype of the VTMD was fabricated and tested on a simply supported beam and a reinforced-concrete floor of a school building. Both experimental results confirmed the control effectiveness and usefulness of the VTMD. In the beam test, more than 90% reduction in accelerations was observed. In the floor test, 41-56% acceleration reduction can be achieved even though the mass ratio of TMD to structure is very small. Copyright (C) 2009 John Wiley & Sons, Ltd. |
URI: | http://hdl.handle.net/11455/43038 | ISSN: | 1545-2255 | DOI: | 10.1002/stc.330 |
Appears in Collections: | 土木工程學系所 |
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