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http://dx.doi.org/10.5000/EESK.2005.9.3.009

Restrained Stroke Active Tuned Mass Damper  

Kwon, Jang-Sub (특허청 건설기술심사담당관실)
Chang, Sung-Pil (서울대학교 지구환경시스템공학부)
Yoo, Hong (GS건설(주))
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.9, no.3, 2005 , pp. 9-22 More about this Journal
Abstract
The allowed operation space for the mass damper in an active tuned mass damper (ATMD) system is limited for most civil structures. In this study, a restrained stroke active tuned mass damper (RS-ATMD) system with a end-spring and a holder that reduces the stroke of the mass damper with maintaining the control effect durably is proposed. This new control system functions as a conventional ATMD within the predetermined stroke limitation under small excitation and as an RS-ATMD beyond that limitation under large excitation. A new control algorithm considering such an operation principle of the RS-ATMD are also provided. Parameteric study for the various design factors of the RS-ATMD is conducted and the control effectiveness are investigated in comparison with the ATMD. Exposed to sinusoidal or impact load, the RS-ATMD system shows the considerable reduction of the maximum stroke of the mass damper with the slight diminution in the control effectiveness. Excited by random load, it also shows the considerable reduction of the maximum stroke of the mass damper not allowing the diminution in the control effectiveness.
Keywords
active tuned mass dumper; restrained stroke; end-spring; holder; control algorithm;
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