Numerical Analysis of Middle-high Frequency Vibration and Sound Radiation from a Ring-stiffened Cylindrical Shell by SEA

In this paper, the statistical energy analyses (SEA) are used to analyze the middle high frequency vibration and sound radiation from the cylindrical shell with ring stiffeners under force excitation. The numeric al results agree very well to those obtained by analytic methods, which shows that the SEA is applicable to such problems. The paper concentrates on the vibration and sound radiation from a double cylindrical shell, an d some useful conclusions are drawn. By comparison of the results obtained from single and double cylindrical shell, both under force excitation, it is found that the radiated sound pressure of double cylindrical shell is higher than that of single cylindrical shell.