The Effect of Initial Forces on the Hydroelastic Vibration and Stability of Planar Curved Tubes

[+] Author and Article Information
J. L. Hill, C. G. Davis

Department of Aerospace Engineering, Mechanical Engineering, and Engineering Mechanics, The University of Alabama, University, Ala.

J. Appl. Mech 41(2), 355-359 (Jun 01, 1974) (5 pages) doi:10.1115/1.3423292 History: Received November 01, 1972; Revised May 01, 1973; Online July 12, 2010


The effect of initial forces on the vibration and stability of curved, clamped, fluid conveying tubes is analyzed by the finite-element technique. The tubes are initially planar with general center-line shapes approximated by constant curvature arcs. The effect of internal pressure is included. Numerical results are presented with, and without, the effects of the initial in-plane forces, for circular arcs S, L, and spiral configurations. Neglecting initial forces results in out-of-plane buckling, while including these forces prevents buckling within the elastic limit, in all configurations studied.

Copyright © 1974 by ASME
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