Low Frequency Acoustics of Laminated Composite Axisymmetric Structures

摘要

A theory of low frequency sound radiation from and scattering by finiteaxisymmetric laminated composites is given. The structure is modelled by conical shell finite elements or axisymmetric solid finite elements. The surrounding fluid is modelled by the Helmholtz integral equation. Excitations are a time-harmonic mechanical force at a selected node or a plane wave at arbitrary incidence. Degrees of freedom other than those normal to the structure's exterior surface are removed by receptance coupling methods....Acoustic radiation, Acoustic scattering, Theory, Finite elements, Laminated composites.