Experimental Modal Analysis Of A Water-filled
Circular Cylindrical Tank
Author(s)
M. Amabili, F. Pagnanelli & M. Pellegrini
Abstract
Experimental modal analysis has been performed on an empty and water-filled,
circular cylindrical tank horizontally suspended. The tank is composed of a
circular cylindrical shell with a longitudinal butt seam welding and two end
annular plates. A rubber disk was glued to each annular plate to close the tank.
The boundary conditions imposed to the circular cylindrical shell by the thin end
plates can be considered very close to simply supports. Two little pipe fittings,
used for supplying water, were welded to one of the end plates in such a position
that they do not affect shell vibrations. The tank was hung to a truss with its axis
kept horizontal by a compliant suspension, by using cables connected to the end
plates. The Frequency Response Functions (FRFs) between 100 response points
and one singl
Keywords
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