Energetics of fluid loaded hull‐like structures

The spatial decay rate of vibratory response and of surface pressure for locally excited fluid‐loaded ribbed plates is predicted and physically interpreted from the viewpoint of statistical energy analysis. Several canonical problem solutions are combined to yield a first order energetic model of the propagation of acoustic power along fluid loaded hull‐like structures below critical frequency. These canonical problems are (1) damping of free flexural waves due to radiation from rib supports for periodically supported plates and (2) the hull grazing pressure field due to local excitation of a homogeneous plate. Comparison is made between analytic results and limited experimental data.