25th Congress of International Council of the Aeronautical Sciences, 3 - 8 September 2006, Hamburg, Germany
Paper ICAS 2006-10.1.3

A HYBRID WAVE BASED VIBRO-ACOUSTIC MODELLING TECHNIQUE FOR THE PREDICTION OF INTERIOR NOISE IN AN AIRCRAFT FUSELAGE

B. Van Genechten, D. Vandepitte, W. Desmet
Katholieke Univ. Leuven, Belgium

Keywords: numerical methods, vibro-acoustics, wave based method, hybrid methods

This paper presents a hybrid simulation technique for the interior coupled vibro-acoustic analysis using a wave-based model for the acoustic cavity and a finite element model for the stiffened shell-stringer fuselage structure. Application of this approach to a DC-8 section shows an improved time efficiency over classical finite element procedures.

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