FREE ABSTRACT (to read the full article, please log in below).
A coupled structure-acoustic analysis by analytical methods is available
only for simple structures. For a finite cylindrical shell, the coupled
analysis is carried out with the analytical methods based on the hypothesis
of two semi-infinite shell baffles. In this paper the Finite Element and
Boundary Element methods are adopted to investigate the effects of baffles
and end-caps on the coupled dense fluid and shell problems. Three models
of the shell are created. They are respectively the finite shells enclosed
by two plate end-caps, with baffled shells and with two semi-sphere end-caps.
It shows that the coupled natural frequencies are nearly the same for the
three models. The sound radiation is only affected with the baffles in
a small range close to the shell ends.
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© Copyright 2001 Professor F.R. Hall - University of Wolverhampton.