Critical Speeds of Two Bearing Machines With Overhung Weight

[+] Author and Article Information
Reyton F. Wojnowski

International Business Machines Corporation, Rochester, N. Y.

Thomas R. Faucett

The University of Rochester, Department of Mechanical Engineering, Rochester, N. Y.

J. Eng. Ind 83(4), 377-379 (Nov 01, 1961) (3 pages) doi:10.1115/1.3664535 History: Received January 18, 1960; Online December 09, 2011


The purpose of this study was to determine the general frequency expression for a rotating shaft with uniformly distributed weight, supported by two bearings, and carrying a concentrated weight at the free end. The bearing spacing and the ratio of the concentrated weight to the total distributed weight have been used as parameters. The data have thus been reduced to dimensionless form so that the results are generally applicable for this type of machine. Frequencies for the first three modes of vibration have been determined and curves plotted for rapid calculation of these frequencies.

Copyright © 1961 by ASME
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