The Effect of Viscosity on the Forced Vibrations of a Fluid-Filled Elastic Shell

[+] Author and Article Information
T. C. Su

Department of Ocean Engineering, Florida Atlantic University, Boca Raton, Fla. 33431

J. Appl. Mech 50(3), 517-524 (Sep 01, 1983) (8 pages) doi:10.1115/1.3167084 History: Received October 01, 1982; Revised November 01, 1982; Online July 21, 2009


The effect of viscosity on the axisymmetric, forced vibrations of a fluid-filled, elastic, spherical shell is studied analytically. Necessary theory, using boundary layer approximation for the fluid as developed in a previous paper for free vibrations, has been extended to incorporate an external forcing excitation. Shell response, fluid loading, and energy dissipation rate are computed for radial, tangential, and combined force excitations. The essential feature of the modal and the total responses is determined by resonant frequencies and various vibration-absorbing frequencies. Frequency spectra for such frequencies, as well as various response curves, are presented in dimensionless forms to illustrate the characteristics of the solution.

Copyright © 1983 by ASME
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