On the Dynamic Analysis of Curved and Twisted Cylinders Transporting Fluids

[+] Author and Article Information
R. W. Doll

TRW Systems Group, Redondo Beach, Calif.

C. D. Mote

Depart. of Mechanical Engineering, University of California, Berkeley, Calif.

J. Pressure Vessel Technol 98(2), 143-150 (May 01, 1976) (8 pages) doi:10.1115/1.3454351 History: Received July 30, 1975; Online October 25, 2010


The longitudinal, torsional and 2-transverse equations of motion are formulated for the titled problem through application of Hamilton’s Principle. Curvature-torsion conditions under which linear oscillation in a plane can exist are identified. The finite element method with isoparametric elements is used for discretization prior to spectra analysis. Natural frequency calculations over a range of mass transport velocities and cylinder end conditions were carried out for comparison with constant and variable curvature analyses and experiment. These results support the application of the constant curvature, inextensible centerline model for curved cylinder vibration analysis.

Copyright © 1976 by ASME
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