Simulation of Sonar Transducer by Two-Dimensional Finite Element Method, ATILA Code and GiD Graphical Interface

In the design of low frequency transducer arrays for active sonar systems, the crosstalk and structure interactions (between the transducer elements and structure) have been mostly investigate. Many important issues in transducer arrays design, such as crosstalk, cannot be accurately studied using analytic method due to the complexity of the partial differential equations involved. Finite element method FEM is the only appropriate way to gain more detailed information. In this paper, a 2-D finite element model is constructed to analyze the crosstalk and structure interactions, using ATILA code and GiD graphical interface. Different results are available such, underwater directivity patterns, and sensitivity. From these diagrams, it is shown how crosstalk and structure interactions affect the directivity patterns and sensitivity.