Parametric Instability of Circular Cylindrical Shells

[+] Author and Article Information
A. Vijayaraghavan, R. M. Evan-Iwanowski

Department of Mechanical and Aerospace Engineering, Syracuse University, Syracuse, N. Y.

J. Appl. Mech 34(4), 985-990 (Dec 01, 1967) (6 pages) doi:10.1115/1.3607867 History: Received August 10, 1966; Revised March 01, 1967; Online September 14, 2011


Parametric instability of thin, circular cylindrical shells subjected to in-plane longitudinal inertia loading arising from sinusoidal base excitation has been investigated analytically and experimentally. The shell under consideration was rigidly clamped at the base and free at the upper edge. In the applied excitation frequency range, the test specimens exhibited lateral vibrations, at half the driving frequency, with one half longitudinal wave and three full circumferential waves. The linear bending theory used in the analysis was adequate in predicting the incipience of instability, just as in the case of slender rods. Attention has been confined to investigating only the principal instability region, as observed during the experiments. Excellent agreement was obtained between the analytical and experimental results.

Copyright © 1967 by ASME
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