Analysis of Vortex-Induced Vibration of Marine Riser Under the Consideration of Pre-stress Force Distribution

作者：Chen, Luyun; Li, Leixin; Yang, Nian

来源：Journal of Shanghai Jiaotong University, 2017, 51(4): 476-484.

DOI：10.16183/j.cnki.jsjtu.2017.04.015

• Complex loading
• Dynamic characteristics
• Euler Bernoulli beam theory
• New approaches
• Stress strain
• Top tensioned risers
• VIV response
• Vortex-induced vibration

In present research, the problem of vortex-induced vibration (VIV) of marine riser structure with complex pre-stress force distribution is considered. Based on the Euler-Bernoulli beam theory, according to the stress-strain formula, differential equations of the influence with complex pre-stress force distribution on riser structure are established. At the end, a top-tensioned riser (TTR) which is under shear flow loading is taken as an example, the influence of natural frequency, mode shape, and VIV response characteristic by complex pre-stress force distribution are investigated. The result shows that the distribution of complex pre-stress force has a significant influence on the riser structural dynamic characteristics, especially on the natural frequency. It is shown that the method proposed in this research provides a new approach to analyze the VIV problem of riser structure with complex loading.

• 出版日期2017
• 单位上海交通大学; 中国舰船研究设计中心