Acoustic radiation from doubly periodic, ring-supported, fluid-loaded, circular cylindrical shells for different types of mechanical drives

The farfield acoustic radiation from a doubly periodic, ring-supported, fluid-loaded, circular cylindrical shell is computed for moment and longitudinal mechanical drives. The shell model used by C. B. Burroughs [J. Acoust. Soc. Am. 75, 715–722 (1984)] to compute the acoustic radiation for a radial point drive is employed in this effort. The rings interact with the shell only through normal forces. The model includes the effect of fluid loading and interaction between ring supports. For a large cylinder radius, predictions are compared to published results for a point-driven doubly periodic line supported plate and a moment-driven unsupported plate. Predictions of the farfield acoustic radiation from the ring-supported cylinder for moment and longitudinal drives are compared to predictions for the radial-driven cylinder. Characteristics of the acoustic radiation are examined by example and some physical interpretation of significant features are offered.