Vibration and dynamic stability of a traveling sandwich beam

Wen Pei Yang, Lien Wen Chen, Ching Cheng Wang

研究成果: Article同行評審

17 引文 斯高帕斯(Scopus)

摘要

The vibration and dynamic stability of a traveling sandwich beam are studied using the finite element method. The damping layer is assumed to be linear viscoelastic and almost incompressible. The extensional and shear moduli of the viscoelastic material are characterized by complex quantities. Complex-eigenvalue problems are solved by the state-space method, and the natural frequencies and modal loss factors of the composite beam are extracted. The effects of stiffness and thickness ratio of the viscoelastic and constrained layers on natural frequencies and modal loss factors are reported. Tension fluctuations are the dominant source of excitation in a traveling sandwich material, and the regions of dynamic instability are determined by modified Bolotin's method. Numerical results show that the constrained damping layer stabilizes the traveling sandwich beam.

原文English
頁(從 - 到)597-614
頁數18
期刊Journal of Sound and Vibration
285
發行號3
DOIs
出版狀態Published - 2005 七月 22

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 材料力學
  • 聲學與超音波
  • 機械工業

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