A novel type of dynamic vibration absorber (DVA) is proposed, which consists of a tuned mass damper (TMD) and tuned sloshing damper (TSD) connected in series to the structure. The system enables the expensive viscous damping devices (VDDs) associated with traditional TMDs to be omitted from the design. A linearized equivalent mechanical model and a nonlinear multimodal model are developed to investigate the proposed system. A TMD–TSD is nonlinear due to the quadratic damping associated with liquid drag, which ensures the system performance is amplitude-dependent. Simple expressions for the optimal TSD–TMD mass ratio, tuning, and damping ratios are employed to design a TMD–TSD coupled to a single degree-of-freedom (SDOF) structure. Frequency response curves for the structure, TMD, and TSD degrees-of-freedom are created for several excitation amplitudes, and the nonlinear behavior of the system response is evident. The performance of the TMD–TSD is evaluated against traditional TMD and TSD systems—with the same total mass—by computing the effective damping produced by each system. The proposed system is found to provide a superior acceleration reduction performance and superior robustness against changes to the frequency of the primary structure. The proposed system is, therefore, an effective and affordable means to reduce the resonant response of tall buildings.
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April 2019
Research-Article
Nonlinear Series-Type Tuned Mass Damper-Tuned Sloshing Damper for Improved Structural Control
C. S. Lee
C. S. Lee
RWDI, Inc.,
600 Southgate Drive,
Guelph, ON N1G 4P6, Canada
600 Southgate Drive,
Guelph, ON N1G 4P6, Canada
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J. S. Love
C. S. Lee
RWDI, Inc.,
600 Southgate Drive,
Guelph, ON N1G 4P6, Canada
600 Southgate Drive,
Guelph, ON N1G 4P6, Canada
1Corresponding author.
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received September 2, 2017; final manuscript received September 8, 2018; published online October 26, 2018. Assoc. Editor: Alper Erturk.
J. Vib. Acoust. Apr 2019, 141(2): 021006 (9 pages)
Published Online: October 26, 2018
Article history
Received:
September 2, 2017
Revised:
September 8, 2018
Citation
Love, J. S., and Lee, C. S. (October 26, 2018). "Nonlinear Series-Type Tuned Mass Damper-Tuned Sloshing Damper for Improved Structural Control." ASME. J. Vib. Acoust. April 2019; 141(2): 021006. https://doi.org/10.1115/1.4041513
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