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Instantaneous Phase Detection for Performance Verification of Tuned Mass Dampers

[+] Author Affiliations
Ging-Long Lin, Chi-Chang Lin

National Chung Hsing University, Taichung, Taiwan

Paper No. PVP2015-45978, pp. V008T08A010; 10 pages
  • ASME 2015 Pressure Vessels and Piping Conference
  • Volume 8: Seismic Engineering
  • Boston, Massachusetts, USA, July 19–23, 2015
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5703-8
  • Copyright © 2015 by ASME


Vibration control using tuned mass damper (TMD) for civil structures has been widely accepted and used in buildings and bridges. However, the TMD provides a frequency-dependent damping for the primary structure. The control effectiveness of TMD will vary with the frequency content of the excitation. A method to verify the control performance of TMD is lack in the literatures. In this study, two simple indicators were developed to judge the TMD control performance based on the theoretical derivation, which indicates the maximum power flow is occurred when the TMD stroke lags the structural displacement by ninety degree. The proposed indicators were verified by numerical simulation. The results show the proposed indicators can judge the effective of TMD correctly. In addition, the waveform of the instantaneous phase is helpful to adjust the TMD stiffness to the right value.

Copyright © 2015 by ASME
Topics: Dampers



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