Influence of attached liquid layers on free hydroelastic vibrations of a cylindrical sector shell in a zero-gravity condition

摘要

A theoretical analysis on the hydroelastic behavior of a circular cylindrical sector shell, attached to incompressible and frictionless liquid layers on both its sides, has been performed in a zero-gravity environment. The motion of the section shell is described by the equations of Flugge. The coupled vibration problem has been reduced to an eigenvalue problem by applying the Galerkin method and yields the coupled natural frequencies and vibration modes as eigenvalues and eigenvectors respectively. Numerical calculations were carried out to find the influence of the parameters of the structure-liquid system. Stability boundaries of vibration modes with circumferential wave number N = 0 and N = 1 of a liquid attached inside or outside a rigid cylindrical wall were also investigated. (C) 1998 Academic Press. [References: 20]