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RESEARCH PAPERS

The Influence of Axial-Torsional Coupling on the Natural Frequencies of an Aerial Cable

[+] Author and Article Information
S. H. Venkatasubramanian, W. N. White

Mechanical Engineering Department, Durland Hall, Kansas State University, Manhattan, KS 66506

J. Vib. Acoust 115(3), 271-276 (Jul 01, 1993) (6 pages) doi:10.1115/1.2930344 History: Received May 01, 1991; Revised May 01, 1992; Online June 17, 2008

Abstract

The equations of motion for the small oscillations of a stranded, overhead transmission line are derived and linearized about the static equilibrium position. The influence of axial-torsional coupling on the natural frequencies is studied analytically and an expression is presented for the coupled natural frequency in torsion. In order to verify the analytical results, a finite element analysis of the linearized coupled differential equations is carried out. The results of each analysis are compared and show close agreement. The results of the zero coupling case also closely agree with previous work.

Copyright © 1993 by The American Society of Mechanical Engineers
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