Study on Applicability of Sound Radiation Characteristics of Thin Finite Length Cylindrical Shells Using Wave Propagation Approach

Abstract:

Based on Donnell’s thin shell theory and basic equations, the wave propagation method is discussed here in detail, which is used to investigate the vibration and sound radiation characteristics of thin finite length circular cylindrical shells and ring stiffened shells under various boundary conditions. The effects of boundary conditions, mode truncation, shell’s length, thickness and rings on the acoustic radiation are explored. It is shown that the wave propagation method is more effective for the long cylindrical shell, and the mode truncation can satisfy the calculation accuracy. The conclusion is drawn that the stiffeners have a great influence on the total mechanical impedance while have a slight influence on radiation impedance. The work will give some guidelines for noise reduction of this kind of shell.

• Periodical: Applied Mechanics and Materials (Volumes 190-191)
• Pages: 1325-1330
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.190-191.1325
• Online since: July 2012
• Authors: Bing Ru Li, Xuan Yin Wang, Hui Liang Ge, Yue Peng Jiang
• Keywords: Finite Length Cylindrical Shell, Sound Radiation, Wave Propagation Approach

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