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A method for tuning tuned mass dampers for seismic applications
Author(s) -
Miranda Julio C.
Publication year - 2013
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.2271
Subject(s) - modal , tuned mass damper , eigenvalues and eigenvectors , structural engineering , damper , multiplicity (mathematics) , vibration control , excitation , engineering , control theory (sociology) , physics , computer science , vibration , mathematics , materials science , acoustics , mathematical analysis , electrical engineering , control (management) , quantum mechanics , artificial intelligence , polymer chemistry
This paper studies tuned mass dampers (TMDs) resulting in high modal damping for mechanical systems incorporating such devices for the purpose of seismic response reduction. Focusing on the determination of damping and tuning, the proposed methodology identifies a point of multiplicity of complex eigenvalues and eigenvectors, resulting in different parameters for TMDs according to their location with respect to such multiplicity condition. It is shown that significant equal modal damping and average modal damping can be induced by properly tuning highly damped TMDs, obtaining parameters intrinsic to the mechanical systems, and excitation independent. Further, it is shown that the methodology yields, as particular cases, two proposals by others using TMDs for the same purpose of seismic response abatement. Copyright © 2012 John Wiley & Sons, Ltd.