Dynamic Stability of Truncated Conical Shells Under Pulsating Torsion

[+] Author and Article Information
J. Tani

Institute of High Speed Mechanics, Tohoku University, Sendai, Japan

J. Appl. Mech 48(2), 391-398 (Jun 01, 1981) (8 pages) doi:10.1115/1.3157628 History: Received August 01, 1980; Online July 21, 2009


The dynamic stability of clamped, truncated conical shells under periodic torsion is analyzed by the Galerkin method in conjunction with Hsu’s results. The instability regions of practical importance are clarified for relatively low frequency ranges. Numerical results indicate that under the purely periodic torsion only the combination instability region exists but that with an increase in the static torsion the principal instability region becomes most significant. The relative openness of the instability regions is found to depend sensitively on the circumferential phase difference of two vibration modes excited simultaneously at the resonance with the same circumferential wave number.

Copyright © 1981 by ASME
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