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Experimental study on adjustable tuned mass damper to reduce floor vibration due to machinery
Author(s) -
Chang MinLi,
Lin ChiChang,
Ueng JinMin,
Hsieh KaiHsiang,
Wang JerFu
Publication year - 2010
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.330
Subject(s) - tuned mass damper , vibration , damper , structural engineering , engineering , automotive engineering , vibration control , control theory (sociology) , computer science , acoustics , physics , control (management) , artificial intelligence
Abstract 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 © 2009 John Wiley & Sons, Ltd.