ON THE VORTEX-INDUCED OSCILLATION OF LONG STRUCTURAL ELEMENTS

被引：5

作者：

IWAN, WD

JONES, NP

机构：

[1] California Institute of Technology, Pasadena, CA

[2] Johns Hopkins University, Baltimore, MD

来源：

JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME | 1987年 / 109卷 / 04期

关键词：

D O I：

10.1115/1.3231342

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Previous solutions to the vortex-induced vibration of structures have been primarily based on modal analysis, using a one or two-mode approximation. Such an analysis is generally meaningful only when the vortex shedding frequency is locked onto a natural frequency of the structure. In very large structures, typical of those found in some ocean engineering applications, modes are closely spaced, and it is not reasonable to assume total spanwise correlation in the fluid forces or response. The approach used herein avoids the limitations associated with the modal solution of such problems by implementing a solution based on the traveling wave nature of the response. Results presented indicate that the amplitude of response of a long cable is smaller than is predicted by a conventional modal analysis. The drag forces on such a structure may therefore be overestimated by current design approaches. © 1987 ASME.

引用

页码：161 / 167

页数：7

共 14 条

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