NDLI: The Multi-Degree-of-Freedom Tuned-Mass Damper for Suppression of Single-Mode Vibration Under Random and Harmonic Excitation

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Zuo, Lei Samir, A. Nayfeh
Abstract	Whenever a tuned-mass damper is attached to a primary system, there is potential for utilization of motion of the absorber body in more than one degree of freedom relative to the primary system. In this paper, we propose that more than one mode of vibration of an absorber body relative to a primary system be tuned to a single natural frequency of the primary system. We cast the problem of optimizing the multi-degree-of-freedom connection between the absorber body and primary structure as a decentralized control problem, and develop optimization algorithms based on the H2 and H-infinity norms to minimize the response to random and harmonic excitations, respectively. We find that a two-DOF absorber can attain better performance than the optimal SDOF absorber, even for the case where the rotary inertia of the absorber tends to be zero. With properly chosen connection locations, the two-DOF absorber can achieve better vibration suppression than two separate absorbers of optimized mass distribution. We also find that a two-DOF absorber with negative dampers in some of the connections to the primary system can obtain much better performance than absorbers with only positive dampers.
Sponsorship	Design Engineering Division and Computers and Information in Engineering Division
Starting Page	2051
Ending Page	2061
Page Count	11
File Format	PDF
ISBN	0791837033
DOI	10.1115/DETC2003/VIB-48550
e-ISBN	0791836983
Volume Number	Volume 5: 19th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C
Conference Proceedings	ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2003-09-02
Publisher Place	Chicago, Illinois, USA
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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