NUMERICAL PREDICTION OF FATIGUE DAMAGE IN STEEL CATENARY RISER DUE TO VORTEX-INDUCED VIBRATION

被引：2
|
作者：
GAO Yun State Key Laboratory of Structural Analysis for Industrial Equipment and Department of Naval Architecture and Faculty of Vehicle Engineering and Mechanics
机构：
来源：
Journal of Hydrodynamics | 2011年 / 23卷 / 02期
基金：
中国国家自然科学基金;
关键词：
vortex-induced vibration; Steel Catenary Riser (SCR); fatigue damage; modal superposition method;
D O I：
暂无
中图分类号：
O346.2 [疲劳理论];
学科分类号：
080102 ;
摘要：
For studying the characteristics of Steel Catenary Riser (SCR), a simplified pinned-pinned cable model of vibration is established. The natural frequencies, the normalized mode shapes and mode curvatures of the SCR are calculated. The fatigue damage of the SCR can be obtained by applying the modal superposition method combined with the parameters of S - N curve. For analyzing the relation between the current velocity and the SCR’s fatigue damage induced by the vortex-induced vibration, ten different current states are evaluated. Then, some useful conclusions are drawn, especially an important phenomenon is revealed that the maximum fatigue damage in the riser usually occurs near the area of the boundary ends.
引用
收藏
页码：154 / 163
页数：10
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