Passive and active constrained-layer damping of ring type structures

Jem A. Rongong; Geoffrey R. Tomlinson

doi:10.1117/12.274208

9 May 1997 Passive and active constrained layer damping of ring-type structures

Jem A. Rongong, Geoffrey R. Tomlinson

Proceedings Volume 3045, Smart Structures and Materials 1997: Passive Damping and Isolation; (1997) https://doi.org/10.1117/12.274208
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

Abstract

The performance of constrained layer damping treatments can be enhanced by optimizing the segment length or through active control by inducing strains in the constraining layer. This paper investigates the effect of these methods on the flexural and extensional modes of a ring over a wide frequency range. Finite element models are first verified experimentally and then used in parametric studies. It is shown that segmentation of the constraining layer does not increase the maximum damping obtainable for a particular configuration but alters the mode number at which the maximum occurs. It is also shown that the optimum viscoelastic layer stiffness for active constrained layer damping is higher than that for the passive case.

Citation Download Citation

Jem A. Rongong and Geoffrey R. Tomlinson "Passive and active constrained layer damping of ring-type structures", Proc. SPIE 3045, Smart Structures and Materials 1997: Passive Damping and Isolation, (9 May 1997); https://doi.org/10.1117/12.274208

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