請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/43025
標題: Protection of seismic structures using semi-active friction TMD
作者: Lin, C.C.
林其璋
Lin, G.L.
Wang, J.F.
關鍵字: tuned mass damper (TMD)
passive control
semi-active control
seismic
variable friction
non-sticking friction
tuned mass dampers
energy-dissipation devices
smart isolation system
predictive control
building complex
dynamic-analysis
earthquakes
design
equipment
wind
期刊/報告no:: Earthquake Engineering & Structural Dynamics, Volume 39, Issue 6, Page(s) 635-659.
摘要: Although the design and applications of linear tuned mass damper (TMD) systems are well developed, nonlinear TMD systems are still in the developing stage. Energy dissipation via friction mechanisms is an effective means for mitigating the vibration of seismic structures. A friction-type TMD, i.e. a nonlinear TMD, has the advantages of energy dissipation via a friction mechanism without requiring additional damping devices. However, a passive-friction TMD (PF-TMD) has such disadvantages as a fixed and predetermined slip load and may lose its tuning and energy dissipation abilities when it is in the stick state. A novel semi-active-friction TMD (SAF-TMD) is used to overcome these disadvantages. The proposed SAF-TMD has the following features. (1) The frictional force of the SAF-TMD can be regulated in accordance with system responses. (2) The frictional force can be amplified via a braking mechanism. (3) A large TMD stroke can be utilized to enhance control performance. A non-sticking friction control law, which can keep the SAF-TMD activated throughout an earthquake with an arbitrary intensity, was applied. The performance of the PF-TMD and SAF-TMD systems in protecting seismic structures was investigated numerically. The results demonstrate that the SAF-TMD performs better than the PF-TMD and can prevent a residual stroke that may occur in a PF-TMD system. Copyright (C) 2009 John Wiley & Sons, Ltd.
URI: http://hdl.handle.net/11455/43025
ISSN: 0098-8847
文章連結: http://dx.doi.org/10.1002/eqe.961
顯示於類別:土木工程學系所

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