Active Stiffness Control of Cable Vibration

[+] Author and Article Information
Yozo Fujino

Department of Civil Engineering, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan

Pennung Warnitchai

Division of Structural Engineering and Construction, Asian Institute of Technology, Bangkok, Thailand

B. M. Pacheco

Ammann and Whitney, Inc., New York, NY 10014-3309

J. Appl. Mech 60(4), 948-953 (Dec 01, 1993) (6 pages) doi:10.1115/1.2901006 History: Received December 26, 1991; Revised May 11, 1992; Online March 31, 2008


To suppress cable vibrations, active stiffness control, which changes the tension as a positive use of parametric excitation, is studied. An optimal algorithm is obtained from energy analysis and verified by experiment on a scale model. Numerical investigation is then made on the control of a combined system of cable and single-degree- of-freedom structure; the degree-of-freedom of the latter is along the cable axis. It is found by numerical simulation that instability occurs when the mass ratio of cable to structure is large, or when the frequency ratio of structure to cable is close to 2.0.

Copyright © 1993 by The American Society of Mechanical Engineers
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