Sound Scattering by a Layered Sphere.
Abstract
The sphere, which is located in an acoustic fluid, is composed of an arbitrary number of concentric layers of elastic solids and fluids. It is excited by a time-harmonic incident plane wave. The exact linear equations of elasto-dynamics, visco-dynamics and acoustics are solved to obtain, via the finite element method, a matrix equation which connects the interface displacements and external stresses in the spectral domain. The pressure scattered to the far-field is obtained from the radial spectral displacements of the outer surface. Numerical results of scattered sound spectra are presented for the case of an aluminium shell with and without a GRP (Glass Reinforced Plastics) coating. (Great Britain)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1985
- Accession Number
- ADA157915
Entities
People
- E. A. Skelton
- S. J. Ansley