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http://dx.doi.org/10.9712/KASS.2022.22.3.49

Experimental Evaluation of Seismic Response Control Performance of Smart TMD  

Kang, Joo-Won (School of Architecture, Yeungnam University)
Kim, Hyun-Su (Division of Architecture, Sunmoon University)
Publication Information
Journal of Korean Association for Spatial Structures / v.22, no.3, 2022 , pp. 49-56 More about this Journal
Abstract
Tuned mass damper (TMD) is widely used to reduce dynamic responses of structures subjected to earthquake loads. A smart tuned mass damper (STMD) was proposed to increase control performance of a traditional passive TMD. A lot of research was conducted to investigate the control performance of a STMD based on analytical method. Experimental study of evaluation of control performance of a STMD was not widely conducted to date. Therefore, seismic response reduction capacity of a STMD was experimentally investigated in this study. For this purpose, a STMD was manufactured using an MR (magnetorheological) damper. A simple structure presenting dynamic characteristics of spacial roof structure was made as a test structure. A STMD was made to control vertical responses of the test structure. Two artificial ground motions and a resonance harmonic load were selected as experimental seismic excitations. Shaking table test was conducted to evaluate control performance of a STMD. Control algorithms are one of main factors affect control performance of a STMD. In this study, a groundhook algorithm that is a traditional semi-active control algorithm was selected. And fuzzy logic controller (FLC) was used to control a STMD. The FLC was optimized by multi-objective genetic algorithm. The experimental results presented that the TMD can effectively reduce seismic responses of the example structures subjected to various excitations. It was also experimentally shown that the STMD can more effectively reduce seismic responses of the example structures conpared to the passive TMD.
Keywords
Experiment of smart tuned mass damper; Seismic response control; Fuzzy logic control; Smart control device;
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Times Cited By KSCI : 4  (Citation Analysis)
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