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RESEARCH PAPERS: Fatigue, Fracture Mechanics, Mechanical and Heat Energy in Machine Components

Heat Propagation in Rotating Shafts Due to Damping

[+] Author and Article Information
S. Panteliou, A. Dimarogonas

Machine Design Laboratory, University of Patras, Patras, Greece

J. Mech. Des 104(3), 675-678 (Jul 01, 1982) (4 pages) doi:10.1115/1.3256405 History: Received June 12, 1981; Online November 17, 2009

Abstract

Static loading of rotating shafts can yield substantial temperatures in the shaft due to heat generated from material damping. It has been recently observed that such a situation in electric generators can lead to insulation failures and machine outages. The hysteretic model for material damping was used to yield the heat generation in the elastic deformation range. The heat conduction equation was solved in the cylindrical shaft with surface cooling. Analytical solutions were obtained and expressions for the maximum temperatures and the maximum surface temperatures were computed and tabulated for design purposes. It is shown that substantial temperatures can develop in shafts at high speeds of rotation even at moderate static loads.

Copyright © 1982 by ASME
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