Analysis of Acoustic Radiation from the Ring-stiffened Cylindrical Shell in Fluid Medium
In this paper the Donnell theory of shell is applied to describe shell motion. Using deformation harmonious conditions of the interface, the effects of stiffeners are treated as reverse forces and moments acting on the cylindrical shell. In the process of studying the acoustic field produced by vibration of the submerged ring-stiffened cylindrical shell, the structure dynamic equation, Helmholtz equation in the fluid field and the continuous conditions of the fluid-structure interface compose the coupling vibration equation of the acoustic- fluid-structure. The extract of acoustic pressure comes down to the extract of coupling vibration equation. By use of the solution of the equation, the influences of geometric parameters of the shell, the size of the ring and the spacing of rings on the radiated power, radical quadratic velocity are discussed. The near and far field acoustic pressure and the surface acoustic pressure of the shell are given by formulas.
ring-stiffened cylindrical shell coupling vibration equation acoustic radiation
Luo Dongping Cai Minbo Chen Meixia Luo Bin
Huazhong University of Science and Technology, Wuhan 430074, P. R. C
国际会议
北京
英文
224-233
2007-10-01（万方平台首次上网日期，不代表论文的发表时间）