Nyzhnyk O. Radiation of hydroacoustic signals by planar antenna arrays formed from cylindrical piezoceramic transducers

The dissertation is devoted to the development of computational models of planar hydroacoustic antenna arrays consisting of cylindrical piezoceramic transducers in the formulation of the problem of stationary hydroelectrorlasticity with respect to the emission of hydroacoustic signals by them. The developed methods allow systemically to take into account the influence of design characteristics of grids and transducers in their composition on their physical fields. Particular attention is paid to taking into account the interaction of these fields in the process of energy conversion, the interaction of transducers in the array with each other along the acoustic field, the reaction of the external and internal media of the transducers to the excitation of acoustic fields in them and the dependence of all these factors on the specific geometric, physical and wave properties of lattice structures and converters. Numerical experiments and their systematized complex analysis is done. The physical interpretation of the results is given.