Vibro-Acoustics Characteristics of Non-Uniform Ring Stiffened 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 non-uniform ring stiffened cylindrical shells under various boundary conditions. The structure damp effects of cylindrical shells are investigated and the ring ribs were considered very narrow, and the rib forces are considered in radial direction. The conclusion are drawn that with the structural loss factor changing large, the whole pressure level are changed little, but the peak of resonance are slacking down obviously; The shell’s resonance frequency can be changed with irregular ring stiffened cylindrical shell .The work will give some guidelines for noise reduction of this kind of shell.

• Periodical: Advanced Materials Research (Volumes 655-657)
• Pages: 562-567
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.655-657.562
• Online since: January 2013
• Authors: Bing Ru Li, Yue Peng Jiang, Xuan Yin Wang, Hui Liang Ge
• Keywords: Ring-Stiffened Cylindrical Shell, Sound Radiation, Wave Propagation Approach

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