Dynamics of Eccentric Shafts Under Linearly Varying Tension Rotating in a Viscous Medium

[+] Author and Article Information
V. Prodonoff

Department of Mechanical Engineering, Instituto Militar de Engenharia, Rio de Janeiro, Brazil

C. D. Michalopoulos

Department of Mechanical Engineering, University of Houston, Houston, Texas

J. Eng. Ind 96(4), 1285-1290 (Nov 01, 1974) (6 pages) doi:10.1115/1.3438508 History: Received November 22, 1972; Online July 15, 2010


Using Euler-Bernoulli beam theory an investigation is made of the dynamic behavior of an eccentric vertical circular shaft rotating in viscous medium. The shaft is subjected to linearly-varying tension and has distributed mass and elasticity. The mass eccentricity is assumed to be a deterministic function of the axial coordinate. The solution is obtained by modal analysis. An example is considered wherein the shaft is simply supported at the top and vertically guided at the bottom. Steady-state deflections and bending stresses are computed for a particular eccentricity function over a range of speeds of rotation which includes a resonant frequency.

Copyright © 1974 by ASME
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