Numerical studies of shear damped composite beams using a constrained damping layer

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Abstract

Composite beams containing one or more damping layers are studied numerically. The work is based on a semi-analytical model using a Timoshenko beam theory and a full 2D finite element model. The material system analysed, is inspired by a train wagon suspension system used in a EUREKA project Sigma!1841. For the material system, the study shows that the effect of the damping layer is strongly influenced by the presence of a stiff constraining layer, that enforces large shear strain amplitudes. The thickness of the damping rubber layer itself has only a minor influence on the overall damping. In addition, a large influence of ill positioned cuts in the damping layer is observed.
Original languageEnglish
JournalComposite Structures
Volume83
Issue number3
Pages (from-to)304-311
ISSN0263-8223
DOIs
Publication statusPublished - 2008

Keywords

  • composite beam
  • Timoshenko beam theory
  • constrained damping

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