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Article Dans Une Revue Composite Structures Année : 2014

A reduced formulation for the free-wave propagation analysis in composite structures

Résumé

This paper presents an improved numerical strategy for the broadband analysis of wave propagation in composite or complex cross-sectional waveguides using the wave finite element method (WFE). Numerical analysis of such structures require highly discretized finite element models and leads to extensive computations. The proposed formulation relies on a projection of the cross-sectional transfer matrices on a reduced set of shape functions associated to propagating waves. Dispersion curves are then predicted only using a reduced number of eigenvectors. The performances and stability of this method are evaluated using the wavenumbers and wave shapes. Validations are provided for a sandwich composite beam and a cylindrical elasto-acoustic waveguide.
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Dates et versions

hal-03372953 , version 1 (11-10-2021)

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C. Droz, J.-P. Lainé, M.N. N Ichchou, G. Inquiété. A reduced formulation for the free-wave propagation analysis in composite structures. Composite Structures, 2014, 113, pp.134-144. ⟨10.1016/j.compstruct.2014.03.017⟩. ⟨hal-03372953⟩
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