Excitation and propagation of normal modes in a thin cylindrical elastic shell filled with fluid
Abstract
A solution is obtained for the problem of excitation of a fluidfilled cylindrical elastic shell by a monopole point source. The problem is reduced to a generalized nonselfadjoint boundaryvalue problem for the inhomogeneous Helmholtz equation with boundary conditions expressed in the form of a system of ordinary differential equations relating the Fourier transforms of the components of the shell displacements and sound pressure at the boundary between the fluid and the shell. The solution of the problem is represented by a normalmode series. A numerical calculation of the spectrum and amplitudes of axisymmetric, beam, and other normalmode configurations is carried out on a BESM6 computer for the approximate theory of thin shells described by Kennard's equations of motion.
 Publication:

Akusticheskii Zhurnal
 Pub Date:
 October 1978
 Bibcode:
 1978AkZh...24..723M
 Keywords:

 Acoustic Excitation;
 Acoustic Propagation;
 Cylindrical Shells;
 Elastic Shells;
 Liquid Filled Shells;
 Propagation Modes;
 Thin Walled Shells;
 Boundary Conditions;
 Boundary Value Problems;
 Sound Pressure;
 Acoustics