船舶与海洋工程学报（英文版）
船舶與海洋工程學報（英文版）
선박여해양공정학보（영문판）
JOURNAL OF MARINE SCIENCE AND APPLICATION
2010年
4期
431-438
,共8页
张俊杰%李天匀%叶文兵%朱翔
張俊傑%李天勻%葉文兵%硃翔
장준걸%리천균%협문병%주상
insertion loss%acoustic radiation%coated layer%Lamè resolution%Helmholtz equation
The insertion loss of acoustic radiation of damped cylindrical shell described by 3-D elasticity Navier equations under radial harmonic applied load in fluid is presented. The classical integral transform technique, potential theory and Lamè resolution are used to derive the solutions of Navier equations. The higher precision inversion computation is introduced to solve the linear equations. Comparing with acoustic radiation of one-layer cylindrical shell, the influence of thickness, mass density, dilatational wave loss factor and Young's modulus of damping material and circumferential mode number of the cylindrical shell on the insertion loss is concluded. The theoretical model in the paper can be used to deal with the arbitrary thickness and any frequency of the coated layer in dynamic problem. The conclusions may be of theoretical reference to the application of damping material to noise and vibration control of submarines and underwater pipes.
