Modal analysis and test verification for out-of-plane vortex induced vibration of a SCR

被引：0
作者：
Yao X. [1 ]
Huang W. [1 ]
Chang S. [1 ]
Liu J. [2 ]
Fu X. [1 ]
机构：
[1] Shangdong Key Lab of Ocean Engineering, Ocean University of China, Qingdao
[2] Institute of Civil Engineering, Agriculture University of Qingdao, Qingdao
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2018年 / 37卷 / 13期
关键词：
Fluid-structure interaction (FSI); Modal analysis; Rigid rotation; Steel catenary riser (SCR); Vortex induced vibration (VIV);
D O I：
10.13465/j.cnki.jvs.2018.13.012
中图分类号：
学科分类号：
摘要：
Steel catenary riser (SCR) is one of the most widely used forms of deep-water risers. Based on the existing theory, an out-of-plane vortex induced vibration (VIV) model of SCR was proposed. The coupling of VIV and rigid rotation was considered in this model. Based on the proposed model, the analysis program CABLE3D_ Rotation was developed to simulate the out-of-plane VIV of SCR. The study showed that considering fluid-structure interaction (FSI), the out-of-plane VIV of SCR is a random vibration with time-varying frequency and amplitude; the effects of FSI on responses of the middle and lower parts of a SCR are larger, FSI can't be neglected in SCR dynamic analysis. The test results showed that there is a rigid rotation mode in dynamic responses of SCR; the correctness of the proposed nonlinear rigid rotation model considering FSI was verified. © 2018, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：78 / 84
页数：6
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