ABSTRAK Xuetao Weng
Terbatas Irwan Sofiyan
» ITB
Terbatas Irwan Sofiyan
» ITB
In this paper, an underwater structure is modeled as a cylindrical shell with internal
bulkheads, and closed by a truncated conical shell, and it consists of metal substrate and sound
absorbing coating, whose FGM core is considered. Suppose the inner cavity and outer space of
the structure are filled with air and fluid mediums, the mechanical response of the underwater
structure is calculated with Galerkin method while the acoustic response is investigated by means
of the Helmholtz integral. Some numerical examples are given and the effect of geometrical size
and material parameters on mechanical and acoustic response is discussed.