SOUND RADIATION FROM A CYLINDER IMMERSED IN AN ACOUSTIC FLUID BOUNDED BY AN ELASTIC HALF-SPACE

The problem of the forced steady-state response of an infinite cylindrical shell immersed in an acoustic fluid bounded by an elastic half-space is investigated. Pressures and radial displacements on the shell surface are expanded into Fourier series. With the aid of the Fourier integral transform, the normal velocities on the boundary of the half-space are expressed in terms of infinite integrals. Continuous distributions of sources of unknown strength are applied along the fluid boundaries, which are subdivided into small intervals, so that the source strengths can be assumed to be constant over each interval. Satisfaction of the boundary conditions at the interfaces leads to a system of linear homogeneous algebraic equations, which is solved for the source strengths on the fluid boundaries and the coefficients of the Fourier series expansion of the shell-fluid interaction pressure. Using these values, the surrounding pressure field is completely determined. Results are presented for several cases of interest.

Supplemental Notes:
- Sponsored by the Office of Naval Research, Arlington, Virginia.
Corporate Authors:
Weidlinger (Paul)

Consulting Engineer
New York, NY United States

Brooklyn Polytechnic Institute

333 Jay Street
Brooklyn, NY United States 11201
Authors:
- Skidan, O
- Klosner, J M
- Baron, M L
Publication Date: 1972-6

Media Info

Features: References;
Pagination: 75 p.

Subject/Index Terms

TRT Terms: Acoustic radiation; Cylinders (Geometry); Shells (Structural forms); Sound transmission; Wave motion
Uncontrolled Terms: Cylindrical shells
Old TRIS Terms: Sound radiation
Subject Areas: Design; Marine Transportation;

Filing Info

Accession Number: 00035679
Record Type: Publication
Source Agency: Ship Structure Committee
Report/Paper Numbers: PIBAL Rpt No. 72-1 Tech Rpt
Contract Numbers: N00014-72-C-0119, N00014-67-A004380006
Files: TRIS
Created Date: Oct 13 1973 12:00AM