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Research background <p>The riser will vibrate in the harsh marine environment for a long time, which will lead to fatigue&#xa0;damage. Therefore, it is necessary for the detector to monitor this in real time. At the same time, the vibration control of&#xa0;the riser can not be ignored.</p> Research purposes <p>The difficulty of power supply in the marine environment and the vibration of the riser will lead to&#xa0;fatigue damage. In order to solve these two problems, the research was carried out.</p> Methods <p>The governing equations of the prediction model are derived using the method of infinitesimal elements,&#xa0;discretized via the Galerkin method, and numerically solved with the fourth-order Runge-Kutta method.</p> Results/Conclusions <p>In the open-circuit state, adjusting the capacitance and spatial configuration of the piezoelectric&#xa0;system can control the natural frequency, vibration amplitude, and lock-in region of the riser. Piezoelectric parameters&#xa0;directly affect energy harvesting, while fluid parameters indirectly influence energy harvesting by affecting the lock-in&#xa0;behavior of the riser.</p>

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Research on Vortex-Induced Vibration Energy Collection and Semi-Active Vibration Control of Marine Riser Based on Piezoelectric Effect

  • 期刊论文

  • 发表日期：

    2025年9月26日

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  • Xueping Chang,
  • Bin Hu

摘要

Research background

The riser will vibrate in the harsh marine environment for a long time, which will lead to fatigue damage. Therefore, it is necessary for the detector to monitor this in real time. At the same time, the vibration control of the riser can not be ignored.

Research purposes

The difficulty of power supply in the marine environment and the vibration of the riser will lead to fatigue damage. In order to solve these two problems, the research was carried out.

Methods

The governing equations of the prediction model are derived using the method of infinitesimal elements, discretized via the Galerkin method, and numerically solved with the fourth-order Runge-Kutta method.

Results/Conclusions

In the open-circuit state, adjusting the capacitance and spatial configuration of the piezoelectric system can control the natural frequency, vibration amplitude, and lock-in region of the riser. Piezoelectric parameters directly affect energy harvesting, while fluid parameters indirectly influence energy harvesting by affecting the lock-in behavior of the riser.