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RESEARCH PAPERS

Thermoelastic Vibration and Damping for Circular Timoshenko Beams

[+] Author and Article Information
R.-C. Shieh

Structural Dynamics Section, Transportation Safety Department, Calspan Corporation, Buffalo, N. Y.

J. Appl. Mech 42(2), 405-410 (Jun 01, 1975) (6 pages) doi:10.1115/1.3423590 History: Received July 01, 1974; Revised November 01, 1974; Online July 12, 2010

Abstract

Within the framework of the theories of coupled linear thermoelasticity and Timoshenko beams, the vibration and thermoelastic damping (with emphasis on the transverse ones) of circular cross-section beams are studied. The governing equations are derived for the case of general mechanical boundary conditions and special thermal boundary conditions that follow the Newton surface heat transfer law. A variational principle governing the eigenfunctions associated with an eigenvalue is formulated. An exact solution, together with the thermoelastic damping coefficient, is obtained for the case of transverse vibrations of a simply supported beam with lateral surfaces thermally insulated and end surfaces kept at constant temperature. Numerical results, together with the discussion for the first two eigenvalues and the thermoelastic damping coefficients, are also presented.

Copyright © 1975 by ASME
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