Stability of the rectangular sandwich beam with viscoelastic core is studied in this paper.Two governing equations are obtained resulted from the relationship between force-equilibrium and moment-equilibrium by using Kelvin and Maxwell model.The Galerkin method is employed to investigate the stability and oscillation of the beam when it is in supersonic flow.The effects of the two models on its frequency and stability have been compared and analyzed.Results show that flutter occurs at an internal resonance point, where two order natural frequencies couples.The amplitude of flutter is independent of the viscoelastic model of the core.
LI Guo-jie, YANG Xiao-dong
. Flutter analysis of sandwich beam for two viscoelastic models[J]. Journal of Shenyang Aerospace University, 2013
, 30(6)
: 16
-20
.
DOI: 10.3969/j.issn.2095-1248.2013.06.004
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