Effect of Longitudinal Stringers on Sound Transmission into a Thin Cylindrical Shell
Abstract
In the context of the transmission of airborne noise into an aircraft fuselage, a mathematical model is presented fore the transmission of airborne noise into a stiffened cylindrical shell. The stiffeners are longitudinal stringers and are modeled as discrete structural elements. The numerical cases examined were typical of a narrow-bodied jet transport fuselage. The stringers appeared to raise the cylindrical transmission loss in the mass-controlled region, although they produced dips at the stringer resonances. The ring-frequency dip in transmission loss, which is characteristic of monocoque shells, was found to still be present. There appeared to be a small increase in transmission loss as the number of stringers was increased. The effect of high damping was also investigated.
Recommended Citation
L. R. Koval, "Effect of Longitudinal Stringers on Sound Transmission into a Thin Cylindrical Shell," Journal of Aircraft, American Institute of Aeronautics and Astronautics (AIAA), Jan 1978.
The definitive version is available at https://doi.org/10.2514/3.58454
Department(s)
Mechanical and Aerospace Engineering
International Standard Serial Number (ISSN)
0021-8669
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 1978 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.
Publication Date
01 Jan 1978
