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Comparing the performance of a dynamic vibration absorber with a very large or very small moment of inertia

Jang, S.-J., Brennan, M.J. and Rustighi, E. (2010) Comparing the performance of a dynamic vibration absorber with a very large or very small moment of inertia Journal of Vibration and Acoustics, 132, (3) (doi:10.1115/1.4000780).

Record type: Article


In this article, the performance of a two degree-of-freedom dynamic
vibration absorber (DVA) with very large or very small
moment of inertia is studied. Although it has been shown previously
that an optimally tuned DVA with a negligibly small moment
of inertia marginally outperforms the optimally tuned DVA with a
very large moment of inertia, the physical reasons for this have
not been made clear. Using a simplified model of the stiffness
elements of the DVA, it is shown that the two sets of parallel
combinations of stiffness and damping elements of the DVA with
negligibly small moments of inertia effectively act in series, rather
than in parallel as in the other case. Furthermore, it is shown that
the stiffness and damping elements can be represented as a single
stiffness and a single damping element whose properties are frequency
dependent. This frequency dependency means that there is
additional freedom in choosing the optimum stiffness and damping
of the DVA, which results in better performance.

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Published date: June 2010


Local EPrints ID: 146839
ISSN: 1048-9002
PURE UUID: ac6d7c15-558b-4f29-95cf-d9d3154328a0
ORCID for E. Rustighi: ORCID iD

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Date deposited: 22 Apr 2010 14:32
Last modified: 18 Jul 2017 23:03

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Author: S.-J. Jang
Author: M.J. Brennan
Author: E. Rustighi ORCID iD

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