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Advances in Aircraft and Spacecraft Science Volume 6, Number 6, November 2019 , pages 463-478 DOI: https://doi.org/10.12989/aas.2019.6.6.463 |
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An investigation on the vibrations of laminated shells under aeroacoustic loads using a WFE approach |
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F. Errico, F. Franco, M. Ichchou, S. De Rosa and G. Petrone
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| Abstract | ||
| The present work investigates the effect on the flow-induced vibrations of the lay-up sequence of composite laminated axisymmetric structures, using an hybrid approach based on a wave finite element and a transfer matrix method. The structural vibrations, under deterministic distributed pressure loads, diffuse acoustic field and turbulent boundary layer excitations, are analysed and compared. A multi-scale approach is used for the dynamic analysis of fi nite structures, using an elementary periodic subsystem. Different flow regimes and shell curvatures are analysed and the computational efficiency is also discussed. | ||
| Key Words | ||
| wave finite element method; flow-induced vibrations; wave propagation; boundary layer excitation | ||
| Address | ||
| F. Errico: 1.)LTDS, Laboratoire de Tribologie et Dynamique des Systems, Ecole Centrale de Lyon, 36 Avenue Guy de Collongue, 69134, Ecully, France 2.) Pasta-Lab, Laboratory for promoting experiences in aeronautical structures and acoustics, Dipartimento di Ingegneria Industriale, Universita degli Studi di Napoli Federico II, Via Claudio 21, 80125 Napoli, Italy F. Franco, M. Ichchou, S. De Rosa and G. Petrone: Pasta-Lab, Laboratory for promoting experiences in aeronautical structures and acoustics, Dipartimento di Ingegneria Industriale, Universita degli Studi di Napoli Federico II, Via Claudio 21, 80125 Napoli, Italy | ||
