Accession Number:

AD0432664

Title:

A VARIATIONAL SOLUTION OF SOLID AND FREE-FLOODING CYLINDRICAL SOUND RADIATORS OF FINITE LENGTH

Descriptive Note:

Technical rept.

Corporate Author:

CAMBRIDGE ACOUSTICAL ASSOCIATES INC MA

Personal Author(s):

Report Date:

1964-03-01

Pagination or Media Count:

62.0

Abstract:

Finite length effects in solid cylindrical sound sources and in free- flooding squirters are evaluated by means of a variational technique which parallels the Levine-Schwinger variational principle for diffraction problems. The radiation impedance is expressed as the sum of two components 1 the impedance computed from Robeys mathematical model which has been generally applied to cylindrical transducers, but which does not account for and effects 2 the impedance associated with the radial velocity distribution over the two semi-infinite cylindrical surfaces extending the radiating surface. This technique is also applied to longitudinal modes of the solid cylinder, and to non-axisymmetric modal configurations. A subsequent report CAA U-178-48 extends this analysis to arrays of coaxial free-flooding ring-transducers.

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE