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RESEARCH PAPERS: Noise Control and Acoustics

Fuselage Structural-Acoustic Modeling for Structure-Borne Interior Noise Transmission

[+] Author and Article Information
J. F. Unruh, S. A. Dobosz

Southwest Research Institute, 6220 Culebra Road, San Antonio, Texas 78284

J. Vib., Acoust., Stress, and Reliab 110(2), 226-233 (Apr 01, 1988) (8 pages) doi:10.1115/1.3269503 History: Received September 18, 1987; Online November 23, 2009

Abstract

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 inertances 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 without paying additional attention to local area structural details.

Copyright © 1988 by ASME
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