An investigation on the vibrations of laminated shells under aeroacoustic loads using a WFE approach

F Errico (1) , F Franco , Mohamed Ichchou (2) , S de Rosa , G. Petrone (3)

1 ECL - École Centrale de Lyon
2 LTDS - Laboratoire de Tribologie et Dynamique des Systèmes
3 LETEM - Laboratoire d'Etudes des Transferts d'Energie et de Matière

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 finite structures, using an elementary periodic subsystem. Different flow regimes and shell curvatures are analysed and the computational efficiency is also discussed.

Mots clés: wave finite element method; flow-induced vibrations; wave propagation; boundary layer excitation

Domaines: Sciences de l'ingénieur [physics]

F Errico, F Franco, Mohamed Ichchou, S de Rosa, G. Petrone. An investigation on the vibrations of laminated shells under aeroacoustic loads using a WFE approach. Advances in Aircraft and Spacecraft Science, 2019, 6, pp.463 - 479. ⟨10.12989/aas.2019.6.6.463⟩. ⟨hal-02397552⟩