Acoustic interactions in arrays of spherical elastic shells
By: C.L. Scandrett, D.R. Canright
Contributors: Canright, David; Naval Postgraduate School (U.S.). Dept. of Mathematics
Publisher: Naval Postgraduate School; Available from National Technical Information Service
Published: 1990
Place of publication: Monterey, Calif; Springfield, Va
Language: eng
Subjects: ELASTIC SHELLS; SONAR ARRAYS; SHELLS(STRUCTURAL FORMS)
Other titles: NPS-53-90-009.
Description: 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. (jhd)
Notes: Cover title.

"NPS-53-90-009."

"June 1990."

AD A226 091.

Includes bibliographical references (p. 9-10).

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