Accession Number:

AD0726209

Title:

Acoustic Radiation from Multiple Surfaces.

Descriptive Note:

Final rept.,

Corporate Author:

CATHOLIC UNIV OF AMERICA WASHINGTON D C INST OF OCEAN SCIENCE AND ENGINEERING

Personal Author(s):

Report Date:

1970-01-01

Pagination or Media Count:

88.0

Abstract:

A significant part of the current research effort in Acoustic Radiation Theory is concerned with transducer arrays and the effects of the interaction therein. There exist two broad sub-classes of the total problem 1 one or more vibrating elements on a single common surface baffle and 2 one or more vibrating elements on multiple surfaces. Problems within the 1st sub-class have been treated extensively. Few solutions exist for problems within the 2nd sub-class and those that do are very restricted. This exposition seeks to extend the list of analytic developments to include solutions to certain multiple surface problems. Initially, the author obtains a formal solution to the problem of two vibrating spheres using the method of Greens functions. The extension to N vvibrating spheres, of arbitrary radii and location, follows and is obtained directly from the two-sphere problem. It is shown that the method is generally applicable to the N-body problem if the individual body shapes conform to a separable coordinate system and the total field can be made to satisfy the Sommerfeld radiation condition. Author

Subject Categories:

  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE