Hydroelasticity and the field radiated by a slender elastic body into an unbounded fluid

A new approach is described to the prediction of the frequency response function and of the sound radiation of slender elastic bodies, immersed in an unbounded compressible fluid and excited in the low frequency range. The method proposed here is not the standard hydrodynamic slender body theory: it is based on the general three-dimensional formulation, and the slender body assumption is used only to solve explicitly the integral equation of the Helmholtz problem. Experiments have been carried out to validate the theory, on a stiffened circular cylindrical shell, and the theory has provided results in very good agreement with the experimental ones.