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Proceedings Paper

Design of multi-degree-of-freedom tuned-mass dampers
Author(s): Jusin M. Verdirame; Samir A. Nayfeh; Lei Zuo
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Paper Abstract

Many methods have been developed for the design of a single-degree-of-freedom (SDOF) vibration absorber to damp SDOF vibration since Den Hartog presented his fixed points method in 1928. But a rigid body employed as a vibration absorber will in general have six degrees of freedom relative to a structure. By taking full advantage of the inertia of the body, we can damp as many as six modes, or make the system more robust or compact. In this paper, we present a two-step method for optimization of the stiffness and damping of a multi-degree-of-freedom connection between a reaction mass and a vibrating structure: First, treating the reaction mass as a perturbation to the vibrating structure, we obtain an approximate design. Second, we adapt a descent-subgradient method to fine-tune the design by maximizing the minimal damping over a prescribed frequency range.

Paper Details

Date Published: 27 June 2002
PDF: 11 pages
Proc. SPIE 4697, Smart Structures and Materials 2002: Damping and Isolation, (27 June 2002); doi: 10.1117/12.472646
Show Author Affiliations
Jusin M. Verdirame, Massachusetts Institute of Technology (United States)
Samir A. Nayfeh, Massachusetts Institute of Technology (United States)
Lei Zuo, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 4697:
Smart Structures and Materials 2002: Damping and Isolation
Gregory S. Agnes, Editor(s)

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