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论文类型：期刊论文

发表时间：2011-04-01

发表刊物：JOURNAL OF HYDRODYNAMICS

收录刊物：EI、SCIE、CSCD

卷号：23

期号：2

页面范围：154-163

ISSN号：1001-6058

关键字：vortex-induced vibration; Steel Catenary Riser (SCR); fatigue damage; modal superposition method

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.