文献类型：会议论文

英文题名：Dynamical characteristic analysis of a fluid-loaded cylindrical shell with structural discontinuities

作者：Zhang, Shiliang[1];Yan, Jin[1]

机构：[1]Guangdong Ocean Univ, Coll Engn, Zhanjiang 524088, Peoples R China

会议论文集：3rd International Conference on Measuring Technology and Mechatronics Automation (ICMTMA 2011)

会议日期：JAN 06-07, 2011

会议地点：Shanghai, PEOPLES R CHINA

语种：英文

外文关键词：submerged cylindrical shell; discontinuities; power flow; sound power

外文摘要：By using space-harmonic analysis method, the characteristics of vibrational power flow and sound radiation of an infinite submerged cylindrical shell with internal rings and bulkheads are studied analytically. The harmonic motion of the shell and the pressure field in the fluid are described by Flugge shell equations and Helmholtz equation, respectively. The coupling condition on the outer surface of the shell wall is introduced to obtain the vibrational equation of this coupled system. Both four kinds of forces (moments) between rings and shell and between bulkheads and shell are considered. The solution is obtained in series form by expanding the system responses in terms of the space harmonics of the spacings of both ring stiffeners and bulkheads. The vibrational power flow and radiated sound power are obtained and the influences of various complicating effects such as the ring, bulkhead and fluid loading on the results are analyzed. The analytic model is close to engineering practice, which will give some guidelines for noise reduction of this kind structure.