Modal analysis and test verification for out-of-plane vortex induced vibration of a SCR
YAO Xing-long1,HUANG Wei-ping1,CHANG Shuang1,LIU Juan2,FU Xue-peng,1
1. Shangdong Provincial Key Lab of Ocean Engineering, China Ocean University, Qingdao 266071, China;
2. College of Civil Engineering, Qingdao Agriculture University, Qingdao 266009, China
Abstract: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.
姚兴隆1,黄维平1,常爽1,刘娟2,付雪鹏1. 钢悬链式立管出平面涡激振动模态分析及试验验证[J]. 振动与冲击, 2018, 37(13): 78-84.
YAO Xing-long1,HUANG Wei-ping1,CHANG Shuang1,LIU Juan2,FU Xue-peng,1. Modal analysis and test verification for out-of-plane vortex induced vibration of a SCR. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(13): 78-84.
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