Volume 106, Issue 1, July 1999
Index of content:
- STRUCTURAL ACOUSTICS AND VIBRATION 
106(1999); http://dx.doi.org/10.1121/1.427049View Description Hide Description
The forced vibrations of a three-layer sandwich ring with viscoelastic material (VEM) core subjected to traveling loads are investigated. The VEM layer is added to provide damping, and subsequently to reduce vibration. The derived differential equations contain three displacements, which are one transverse displacement and two tangential displacements of the two face layers. The modal expansion technique then yields the forced solution being characterized of six generalized coordinates for each circumferential wave number n. The closed form solutions to the harmonic traveling point loads are solved and discussed. Examples for various cases are illustrated as well and the influences of the viscoelastic core and the face layers on dynamic response and damping effects are particularly discussed. The results show that a very thin VEM can suppress the vibration very effectively.