Abstract:
The splitting of the free-wave dispersion curve for a fluid-loaded plate into sub- and supersonic branches and the apparent ``repulsion`` of these two branches are commonly observed. A simple model of the fluid-loaded plate indicates that this splitting must occur. A framework is offered from which to investigate the sensitivity of the details of the dispersion curve in this spectral range. The influence of the simplifying assumptions on the behavior of the dispersions in this spectral range and the development of more complete models are discussed and cited.