Hydroelastic vibration analysis of wetted thin-walled structures by coupled FE-BE-procedure

The reliable prediction of elastic vibrations of wetted complex structures, as ships, tanks,offshore structures, propulsion components etc. represent a theoretical and numerical demanding task dueto fluid-structure interaction. The paper presented is addressed to the vibration analysis by a combinedFE-BE-procedure based on the added mass concept utilizing a direct boundary integral formulation of thepotential fluid problem in interior and exterior domains. The discretization is realized by boundaryelement collocation method using conventional as well as infinite boundary element formulation withanalytical integration scheme. Particular attention is devoted to modelling of interior problems with bothseveral separate or communicating fluid domains as well as thin-walled structures wetted on both sides.To deal with this specific kind of interaction problems so-called