Abstract: A system and method for the acoustic analysis of a body, in particular a fuselage structure of an aircraft, is provided including: inputting data for geometry, material, boundary conditions and acoustic parameters of the body, generating a body idealized in terms of its structural mechanics, and a cavity simulating the interior of the body, on the basis of the data inputted as a numerical body model, inputting the geometry of the body with a pattern of nodes and the generation of finite elements, stimulating an acoustic loading case by subjecting the body model to at least one sound pressure wave at a defined frequency, analyzing the effect of the sound pressure wave on the body model, and outputting a sound reduction index (R) for the body with reference to that frequency.

Abstract: A system and method for the acoustic analysis of a body, in particular a fuselage structure of an aircraft, is provided including: inputting data for geometry, material, boundary conditions and acoustic parameters of the body, generating a body idealised in terms of its structural mechanics, and a cavity simulating the interior of the body, on the basis of the data inputted as a numerical body model, inputting the geometry of the body with a pattern of nodes and the generation of finite elements, stimulating an acoustic loading case by subjecting the body model to at least one sound pressure wave at a defined frequency, analyzing the effect of the sound pressure wave on the body model, and outputting a sound reduction index (R) for the body with reference to that frequency.