Analysis of Sound Radiation from the Ring-stiffened Cylindrical Shell Coated with Viscoelastic Layer in Fluid Medium
In this paper the Donnell theory of shell is applied to describe shell motion and layer motion is described by means of three-dimensional Navier equations. Using deformation harmonious conditions of the interface, the effects of stiffeners and layer 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 coated 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 sound-fluid-structure. The extract of sound pressure comes down to the extract of coupling vibration equation. By use of the solution of the equation, the influences of hydrostatic pressure, physical characters and geometric parameters of the layer on sound radiation are discussed.
ring-stiffened cylindrical shell viscoelastic layer coupling vibration equation sound radiation
Luo Dongping Cai Minbo Peng Xu Luo Bin
Huazhong University of Science and Technology, Wuhan 430074, P. R. C
国际会议
北京
英文
234-242
2007-10-01（万方平台首次上网日期，不代表论文的发表时间）