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Experimental and numerical simulation investigation on vortex-induced vibration test system based on bare fiber Bragg grating sensor technology for vertical riser

  • Wang, Chunxiao (College of Civil Engineering and Architecture, Shandong University of Science and Technology) ;
  • Wang, Yu (College of Civil Engineering and Architecture, Shandong University of Science and Technology) ;
  • Liu, Yu (College of Civil Engineering and Architecture, Shandong University of Science and Technology) ;
  • Li, Peng (College of Civil Engineering and Architecture, Shandong University of Science and Technology) ;
  • Zhang, Xiantang (College of Civil Engineering and Architecture, Shandong University of Science and Technology) ;
  • Wang, Fei (College of Civil Engineering and Architecture, Shandong University of Science and Technology)
  • Received : 2020.02.17
  • Accepted : 2021.02.18
  • Published : 2021.11.30

Abstract

The Vortex-Induced Vibration (VIV) test system on deepwater riser based on Bare Fiber Bragg Grating (BFBG) sensor technology was designed. Meanwhile, a riser VIV response numerical model was established based on the work-energy principle. The results show that the first-order vibration frequency dominates the vibration of the riser, and as the velocity increases, the dominant frequency of the riser gradually increases under the effect of different top tensions. At the same velocity, as the top tension increases step by step, the dominant frequency and fatigue damage at the same position along the axial length of the riser both gradually decreases. The model test and numerical simulation show a relatively consistent change, maintaining a high degree of agreement. The process control system based on BFBG of model test has excellent performance, and FBG sensors have great advantages in VIV test of a vertical riser in water.

Keywords

Acknowledgement

This work was supported by National Natural Science Foundation of China (Grant No. 51709161, 51874189), Key Technology Research and Development Program of Shandong (Grant No. 2019GHY112061), Research and innovation team of ocean oil and gas development engineering structure, College of Architecture and Civil Engineering, Shandong University of Science and Technology (Grant No. 2019TJKYTD01), Natural Science Foundation of Shandong Province (Grant No. ZR2017BEE041).

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