Wavelet-Galerkin Method for Free Vibrations of Elastic Cable
Publication: Journal of Engineering Mechanics
Volume 129, Issue 3
Abstract
The wavelet-Galerkin method is applied to study the free vibration of a horizontally suspended catenary cable. Antiderivatives of the Daubechies compactly supported wavelets have been used with multilevel representations. Comparison between wavelet and Fourier methods is presented for natural frequencies, mode shapes, and dynamic tension of the cable. Both methods showed that they are converging fast in obtaining the natural frequencies and mode shapes. However, as the dynamic tension is obtained, the Fourier solution shows many oscillations and the existence of the Gibbs phenomenon at the cable supports, whereas, these oscillations do not appear in the wavelet solutions. Comparison is also made with the linear theory of cable vibration. Due to the inclusion of the inertia term of the longitudinal component in our solution, new modes have been found. Those modes are reverting but swapping modes in which the longitudinal displacement component is larger than the transverse displacement component.
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Information
Published In
Journal of Engineering Mechanics
Volume 129 • Issue 3 • March 2003
Pages: 350 - 357
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Aug 14, 2000
Accepted: Aug 27, 2002
Published online: Feb 14, 2003
Published in print: Mar 2003
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