Detailed finite element models of a fuselage structure and acoustic cabin volume of a laboratory based prototypical aircraft fuselage were generated for the purpose of studying the predictive capabilities of deterministic modeling procedures for structure-borne noise transmission. Comparative predictions are made to measured wing-to-fuselage attach point interances and interior noise to force responses. Several structural models with increased structural definition were evaluated. It was found that to accurately predict wing-to-fuselage attach point inertances required increased local area structural definition, while interior noise can be reasonably well predicted wihtout paying additional attention to local area structural details.
Fuselage structural-acoustic modeling for structure-borne interior noise transmission
Struktur-akustisches Modell des Leitwerks zur Ermittlung der strukturbedingten Geraeuschemission in das Flugzeuginnere
ASME-Papers ; Dec ; 1-8
1987
8 Seiten, 16 Bilder, 1 Tabelle, 14 Quellen
Conference paper
English
SEA modeling and experimental validation of structure-borne noise paths in an aircraft fuselage
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