Acoustic scattering from cylindrical shells with deck-type internal plate at oblique incidence

摘要

This paper studies sound scattering from cylindrical shells with deck-type internal structures, represented by an elastic plate attached to the shell along its axial direction. A standard method for solving such coupled problems is used to derive solutions in terms of coupling forces and bending moments at the attachment locations, which themselves are determined by kinematic and dynamic balances between the shell and the internal plate, and hence, characterize the sound/shell/plate interactions. The scattered acoustic field is examined to identify dominant features in the scattering process and to reveal the effects of different attachment conditions on the far-field scattering. Discussed in detail are features in the scattering process associated with oblique incidence, which do not seem to have been previously studied.