Vibrations of fluid-filled hermetic cans

Free, conservative vibrations of a hermetic can? simply supported at the base, are studied. The can is composed by a circular cylindrical shell and two identical circular plates connected to the shell at its ends. The artificial spring method, which is an extension of the classical Rayleigh-Ritz method, is used to solve the system by using substructuring. The can is studied empty and filled with an inviscid and incompressible fluid. Fluid volume conservation is applied. The interaction between the plates and the shell via the fluid is considered, and exact expressions for the fluid velocity potential are used. The effect of flexibility of joints between plates and shell is investigated. Results for a fluid-filled, simply supported shell closed by rigid ends are also obtained and compared to the classical open-end shell. (C) 2000 Academic Press.