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RESEARCH PAPERS: Vibrations Papers

Vortex Excitation of Metal Bellows

[+] Author and Article Information
C. R. Gerlach

Hydro-Mechanical Systems Section, Department of Mechanical Sciences, Southwest Research Institute, San Antonio, Texas

J. Eng. Ind 94(1), 87-94 (Feb 01, 1972) (8 pages) doi:10.1115/1.3428160 History: Received May 12, 1971; Online July 15, 2010

Abstract

The present paper extends the results presented in an earlier paper, and pertains to the prediction of vibratory amplitudes and stress levels resulting from flow-induced vibrations of metal bellows. Included is visual verification of the vortex shedding-bellows convolution coupling phenomena. Two methods for predicting flow excitation amplitudes are described. One method, called a “Stress Indicator” method is a simplification of the other, and allows rapid estimates of bellows dynamic stress values. This simplified method is complemented by a plot of “Stress Indicator” versus number of cycles to failure, obtained from experimental data for actual bellows failures. The influences of bellows damping and acoustical resonances are discussed.

Copyright © 1972 by ASME
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