Analytical Study on Bending Effects in a Stay Cable with a Damper
Publication: Journal of Engineering Mechanics
Volume 133, Issue 11
Abstract
The effects of bending on the modal properties of a stay cable with a transverse damper are analytically studied. Considering that the value of the flexural rigidity in the stay cable is small in practice, an explicit asymptotic formula for the modal damping of a cable with a general type of damper is derived. For a viscous damper, the asymptotic formula obtained is compact, accurate, and thus is very suitable for practical design. Furthermore, for the first few vibration modes of interest, the asymptotic solution is independent of the modal index. It is shown that flexure in the cable reduces the maximum attainable modal damping, possibly up to 20%, while it significantly increases the optimal damping coefficient of the damper.
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Acknowledgments
Acknowledgment is given to Hong Kong Highways Department, China for permission to use the data of Stonecutters Bridge. The writers are grateful to Professor Steen Krenk and Professor Shirley Dyke for their valuable comments during the preparation of the manuscript.
References
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 133 • Issue 11 • November 2007
Pages: 1241 - 1246
Copyright
© 2007 ASCE.
History
Received: May 30, 2006
Accepted: Jun 6, 2007
Published online: Nov 1, 2007
Published in print: Nov 2007
Notes
Note. Associate Editor: Andrew W. Smyth
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