Modal approaches are often preferred to the wave-based ones for the evaluation of instability conditions in classical nonlifting aeroelasticity of plates and shells. Here, within a wave-based finite element framework, sub- and supersonic aerodynamic models are introduced to analyze the effect of self-excited aerodynamic loading terms on the dispersive characteristics of structural waves. The method is validated by using a specific literature test case and is applicable on both isotropic and multilayered flat and curved structures. The sound transmission is also computed under sub- and supersonic turbulent boundary-layer excitations: the effect of including or neglecting the aeroelastic coupling is discussed.

Aeroelastic Effects on Wave Propagation and Sound Transmission of Plates and Shells

Franco, F.;De Rosa, S.;Petrone, G.;
2020

Abstract

Modal approaches are often preferred to the wave-based ones for the evaluation of instability conditions in classical nonlifting aeroelasticity of plates and shells. Here, within a wave-based finite element framework, sub- and supersonic aerodynamic models are introduced to analyze the effect of self-excited aerodynamic loading terms on the dispersive characteristics of structural waves. The method is validated by using a specific literature test case and is applicable on both isotropic and multilayered flat and curved structures. The sound transmission is also computed under sub- and supersonic turbulent boundary-layer excitations: the effect of including or neglecting the aeroelastic coupling is discussed.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/804696
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