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RESEARCH PAPERS: Technical Papers

Dynamics of Flexible Cables Under Combined Vortex and Parametric Excitation

[+] Author and Article Information
S. A. Trogdon

Department of Mechanical Engineering, Duke University, Durham, N. C.

J. F. Wilson

Department of Civil Engineering, Duke University, Durham, N. C.

B. R. Munson

Department of Engineering Science and Mechanics, Engineering Research Institute, Iowa State University, Ames, Iowa

J. Dyn. Sys., Meas., Control 98(3), 286-290 (Sep 01, 1976) (5 pages) doi:10.1115/1.3427036 History: Received April 17, 1976; Online July 13, 2010

Abstract

The response of a flexible cable under the combined effects of transverse fluid loading (vortex shedding) and parametric excitation (time varying tension) is considered. The theoretical transient responses are obtained from the solution of sets of uncoupled Mathieu equations. Experimental results are presented for steady-state cases. The cable responses are characterized by a complex coupling between the two modes of excitation. It is hypothesized that this coupling can be best understood by obtaining experimental measures of a new constant K̃, related to the amplitude of vortex shedding loads.

Copyright © 1976 by ASME
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