首页|An inerter-enhanced asymmetric nonlinear energy sink for response mitigation of structures subjected to harmonic and seismic ground excitations
An inerter-enhanced asymmetric nonlinear energy sink for response mitigation of structures subjected to harmonic and seismic ground excitations
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NETL
NSTL
Wiley
To improve the applicability of mass dampers in control problems facing differenttypes of uncertainties, asymmetric nonlinear energy sink-inerters(ANESIs) are proposed. Previous studies reveal that ANESIs have excellentcontrol effect in mitigating impulsive responses but only briefly touch upontheir seismic application. This study is intended to provide better understandingin this regard by analyzing the dynamics of the ANESI system when subjectedto harmonic and seismic ground excitations. First, the development ofANESIs is described and the theoretical model of ANESIs is updated in accordancewith the experimental validation on a three-story steel-frame structure.Then analytical investigations are carried out and subsequently a designmethod is proposed for the ANESI system when subjected to harmonic groundexcitation. Finally, 12 seismic ground motions are applied to the ANESI systemto assess its control effectiveness, energy and frequency robustness, and spacedemand. The results show that devices with inerter are in general more effectivethan those without inerter and the ANESI outperforms its linear andnonlinear counterparts with stronger robustness against changes in structuralproperty and energy level, demonstrating great potential in seismicapplication.
asymmetric nonlinear energy sinkdynamic testharmonic ground excitationinerterseismic control
Jingjing Wang、Chao Zhang、Yuqiang Zheng
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School of Civil Engineering, GuangzhouUniversity, Guangzhou, China
College of Civil Engineering, HunanUniversity of Technology, Zhuzhou,China
China Construction Fourth EngineeringDivision Corp. Ltd., Guangzhou, China
NETL
NSTL
Wiley
