Finite Element Modeling of Piaggio P.180 Aircraft for Noise Reduction Assessment

This study presents the development of a high-fidelity coupled structural–acoustic finite element model of the Piaggio P.180 passenger cabin. The work aims to predict interior noise in the low- to mid-frequency range. To reduce computational cost, the fuselage was modeled using two-dimensional shell elements and one-dimensional beam elements. A detailed modal analysis accurately captured the cabin’s resonance behavior: the first three structural modes showed good agreement with experimental data. Finally, harmonic response analyses were performed to evaluate the noise reduction through the airframe up to approximately 110 Hz.