Effet de la surface libre sur la dynamique des coques cylindriques horizontales partiellement remplies de liquide.

摘要

This thesis presents an analytical model for the dynamic analysis of thin horizontal cylindrical shells partially filled with liquid. It is a hybrid method which combines the finite elements with the thin shell theory to obtain the specific displacement function.; We study the effect of oscillations of the surface of the fluid on the dynamic behaviour of the shell - liquid system. For this analysis we regard the influence of several parameters such as: circumferential mode, axial mode, slenderness ratio and inertial forces induced by the liquid.; The shell is divided into cylindrical finite elements and the displacement functions are calculated by using the thin shell theory of Sanders. The stiffness and mass matrices of the shell are evaluated in order to find and to solve the equations of motion.; For the internal fluid, a potential function is developed in terms of boundary conditions. The kinetic and potential energies are evaluated to find the influence of the fluid on the dynamics of the structure.