Acoustic Interactions in Arrays of Spherical Elastic Shells
Abstract
The acoustical performance of a submerged linear array of spherical transducers is examined by combining the T-Matrix method of solving for multiple acoustic interactions among separate bodies with a model for the transducers as thin spherical elastic shells. This approach solves the fully coupled problem of the response of the array to internal forcing. The results show that the assumptions giving rise to the Chebyshev criteria for optimal arrays of point sources appear to apply well even for large spheres at low frequencies. However, at frequencies near or above the lowest resonant frequency the directional pattern may be degraded, depending on the material of the shells. Keywords: Spherical harmonies, Elastic shell, Sonar array.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 11, 1990
- Accession Number
- ADA226091
Entities
People
- C. L. Scandrett
- D. R. Canright
Organizations
- Naval Postgraduate School