Free Vibration of Initially Stressed Circular Disks

[+] Author and Article Information
C. D. Mote

Department of Mechanical Engineering, The University, Birmingham, England

J. Eng. Ind 87(2), 258-264 (May 01, 1965) (7 pages) doi:10.1115/1.3670808 History: Received April 24, 1964; Online December 08, 2011


The approximate free vibration characteristics of centrally clamped, variable thickness disks are analyzed by the Rayleigh-Ritz technique. Natural frequencies of transverse vibration are computed, taking into consideration rotational and thermal in-plane stresses as well as purposely induced initial stresses. Initial stresses can significantly raise the minimum disk natural frequency throughout a prescribed rotational and thermal environment. The fundamental mode of disk vibration is one of zero nodal circles and either zero, one, or two nodal diameters, depending upon the disk geometry and the rotational-thermal environment.

Copyright © 1965 by ASME
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