Scattering of Sound by a Viscoelastic, Cylindrical Shell.

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Abstract:

The pressure in the scattered wave resulting from irradiation of an infinitely long, circularly cylindrical, thin, isotropic, viscoelastic shell by a plane, monochromatic sound wave is calculated. The shell is assumed to be freely suspended in an ideal fluid, and to enclose a second, ideal fluid. The motion of the shell is described by means of Lagranges equations, altered so as to account for viscoelasticity. The result for the scattered wave has the form of that for the elastic case except that an expression involving elastic constants is replaced by an impedance function involving viscoelastic parameters. Some properties of this impedance function are drawn from electrical circuit theory and used in discussing the usefulness of the viscoelastic parameters relative to modifying the scattered wave. Author

Author(s):
Hageman, D. H. ; Glass, V. L.
Author Organization(s):
NAVAL UNDERSEA CENTER SAN DIEGO CALIF
Descriptive Note:
Research rept.,
Pagination:
0027

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NUC-TP-348
 Subject Terms
Communities of Interest:
Air Platforms
Descriptor(s):
(*UNDERWATER SOUND, SCATTERING), (*UNDERWATER OBJECTS, VIBRATION), ELASTIC SHELLS, CYLINDRICAL BODIES, VISCOELASTICITY, EQUATIONS OF MOTION, KINETIC ENERGY, POTENTIAL ENERGY
Field(s)/Group(s):
Acoustic Detection and Detectors, Acoustics
Keyword(s):
WAVE EQUATIONS, *ACOUSTIC SCATTERING, CYLINDRICAL BODIES, SHELLS(STRUCTURAL FORMS)
Report Date:
1973 May 01