【摘要】 对水下由环形肋板连接的有限长双层柱壳在点激励下的稳态振动特性进行了研究．基于Ｆｌüｇｇｅ薄壳理论和弹性波理论，将环肋板等价为线力作用在内外壳体上，给出了双层壳耦合振动方程，比较了双层壳和单层壳表面振动速度级更多还原

【Abstract】 The characteristics of vibration in a submerged double shell connected by annular plate drived by a point force in inner shell is studied. The coupled equation of a double shell is derived by using Flügge shell theory and Helmholtz equation. The annular plate is treated as reverse force applied to double shell. The extensional vibration and bending vibration of annular are decoupled and solved respectively, based on the principal of plane elastics wave theory. The radial velocity on the surface of double shel is calculated to show the difference between double shell and single shell.更多还原