Study on applicability of sound radiation characteristics of thin finite length cylindrical shells using wave propagation approach
Based on Donnells 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, shells 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.
Sound radiation finite length cylindrical shell wave propagation approach
LI Bing-ru WANG Xuan-yin GE Hui-liang JIANG Yue-peng
School of Mechanical Engineering,Hangzhou Dianzi University,Hangzhou 310018,China State Key Laboratory of Fluid Power Transmission and Control,Zhejiang University,Hangzhou 310027,Chi State Key Laboratory of Oceanic Acoustics,Hangzhou Applied Acoustics Research Institute,Hangzhou 310
国际会议
the 3nd International Conference on Digital Manufacturing & Automation (第三届数字制造与自动化国际会议(ICDMA 2012))
桂林
英文
1325-1330
2012-08-01（万方平台首次上网日期，不代表论文的发表时间）