Frequencies and profiles of flexural-gravity waves

New results of experiments on the effect of a floating thin plate on the regularization of a standing Faraday gravity wave on the free surface of water in a rectangular vessel are presented. It is shown that an increase in the thickness of a floating plate significantly affects both the natural frequency of oscillations of the hydroelastic system and the shape of the profiles of the observed standing flexural-gravity waves. When the plate thickness is below the critical value, the waveform is described by the theory of non-linear gravity waves; at large thicknesses, the “dry beam” approximation should be used as approximating dependencies.