Analysis of Vibration Damping Characteristics of Bead Panels Using a New Vibration Damping Device Consisting of a Constraint Frame and a Viscoelastic Layer

Abstract

This paper describes numerical simulation of the dynamic characteristics of a bead panel equipped with a new vibration control device. The device includes blocks of viscoelastic gels and a constraint layer having a box cross section. The gel blocks are sandwiched between the constraint layer and the test structure. The modal analysis is carried out numerically using the finite element method with Modal Strain Energy (MSE) method. The effects of the stiffness of the constraint layer on the vibration characteristics of the bead panel were evaluated using the eigen modes, modal loss factors and resonance frequencies.