WELL-POSEDNESS OF A MODEL FOR STRUCTURAL ACOUSTIC COUPLING IN A CAVITY ENCLOSED BY A THIN CYLINDRICAL-SHELL

A fully coupled mathematical model describing the interactions between a vibrating thin cylindrical shell and an enclosed acoustic field is presented. Because the model will ultimately be used in control applications involving piezoceramic actuators, the loads and material contributions resulting from piezoceramic patches bonded to the shell are included in the discussion. Theoretical and computational issues lead to the consideration of a weak form of the modeling set of partial differential equations (PDEs) and through the use of a semigroup formulation, well-posedness results for the system model are obtained. (C) 1995 Academic Press, Inc.