A Finite Element Model for Sound Transmission Through Laminated Composite Plates
The finite element method is used to model the noise transmission through unstiffened and stiffened laminated composite panels of finite size into a closed cavity. Plate and acoustic finite elements are coupled and the frequencies of the coupled modes are determined. The model is then used to calculate the noise reduction of the panel. Results are compared to experimental values obtained at the NASA Langley Research Center. The purpose of this paper is to demonstrate the use of finite elements to model, for noise transmission calculations, complex structures, such as a stiffened composite panel or a composite panel with windows.
J. V. Ramakrishnan and L. R. Koval, "A Finite Element Model for Sound Transmission Through Laminated Composite Plates," Journal of Sound and Vibration, Elsevier, Jan 1987.
The definitive version is available at http://dx.doi.org/10.1016/S0022-460X(87)80109-8
Mechanical and Aerospace Engineering
Article - Journal
© 1987 Elsevier, All rights reserved.