1989•The Journal of the Acoustical Society of KoreaRequires access

Optimal Viscoelastic Layered Dynamic Vibration Absorber

Seong-Dae Im, Si-Bok Lee

Abstract

The effectiveness of using a composite beam with constrained visco-elastic layer as a dynamic vibration absorber is investigated. The performance of this absorber is evaluated in terms of displacement transmissibility when to a primary beam with built-in ends and compared to that of the uniform beam absorber. The results of analysis and design show that it is possible to suppress simultaneoulsy the peak transmissibilities at two or more resonance frequencies and the optimal parameters are located within the available viscoelastic material properties.

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Available abstract

Key concepts: Transmissibility (structural dynamics), Dynamic Vibration Absorber, Viscoelasticity, Constrained-layer damping, Vibration, Materials science, Beam (structure), Displacement (psychology)