A Finite Element Model for Sound Transmission Through Laminated Composite Plates

Author

Jayant V. Ramakrishnan
Leslie Robert Koval, Missouri University of Science and TechnologyFollow

Abstract

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.

Recommended Citation

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 https://doi.org/10.1016/S0022-460X(87)80109-8

Department(s)

Mechanical and Aerospace Engineering

International Standard Serial Number (ISSN)

0022-460X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1987 Elsevier, All rights reserved.

Publication Date

01 Jan 1987