Sound Transmission through Lightweight Metallic Plate by Fourier Transform Method

Abstract:

A theoretical model is developed to investigate sound transmission characteristics of an infinite lightweight plate line connected to equally spaced stiffeners and excited by an oblique plane wave. The reactive forces and moments at the line connections are obtained from the flexural and torsional motions of the stiffeners. The vibro-acoustic equation that describes the dynamic response of the structure is derived by employing the Fourier Transform method, which will be numerically solved by truncating the solution to converge. Numerical examples are presented to investigate the effects of the incidence angle, the stiffener spacing, the plate thickness, on the sound transmission characteristic of the system, and useful conclusions are drawn.

• Periodical: Advanced Materials Research (Volume 676)
• Pages: 325-329
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.676.325
• Online since: March 2013
• Authors: Ye Qing Jin, Fu Zhen Pang, Dong Tang, Xiao Zhong Xie
• Keywords: Fourier Transform Method, Lightweight Metallic Plate, Sound Insulation, Sound Transmission

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