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Published November 22, 1981 | public
Journal Article

The vortex-induced oscillation of non-uniform structural systems

Iwan, W. D.

Abstract

A simple analytical model is presented for the vortex-induced oscillation of non-uniform structures. The effects of limited spatial extent of lock-in and fluid damping of inactive elements are accounted for. For a particular response mode, the equations describing the system response reduce to the form obtained for a rigid cylinder. Empirical formulas for the rigid cylinder response problem can therefore be readily incorporated into the analysis. Three illustrative examples are given which show that the response of a non-uniform cable system may differ markedly from that of a uniform cable system. In general, it is found that the response of the non-uniform system is less than that of the corresponding uniform system.

Additional Information

© 1981 Academic Press Inc. Received 5 February 1981, Revised 19 May 1981. A portion of this investigation was supported by the Civil Engineering Laboratory, Port Hueneme, California. The opinions and conclusions expressed herein are those of the author and do not necessarily reflect the opinions of any sponsoring agency.

Additional details

Created:
August 19, 2023
Modified:
October 17, 2023