Passive vibration control of pipe-in-pipe (PIP) Systems subjected to vortex induced vibration (VIV)
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This paper proposes using modified pipe-in-pipe (PIP) system to mitigate vortex induced vibration (VIV). Numerical simulations are carried out to examine the effectiveness of the proposed method. Firstly, a semi-empirical oscillator model is developed and validated by an experimental test of a single pipe. The validated model is then extended to the modified PIP system, which is simplified as a structure-tuned mass damper (TMD) system in present study. The governing equation of vibration is solved in the time domain using MATLAB/Simulink programming. The results demonstrate that the carefully designed PIP system can significantly suppress VIV of offshore cylindrical structures up to 84%.
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Bi, Kaiming; Hao, Hao (2016)Pipe-in-pipe (PIP) systems are increasingly used in subsea pipeline applications due to their favourable thermal insulation capacity. Pipe-in-pipe systems consist of concentric inner and outer pipes, the inner pipe carries ...
Numerical study of using RDHDS connected PIP system to mitigate earthquake induced subsea pipeline vibrationsBi, Kaiming; Hao, Hong (2017)Pipe-In-Pipe (PIP) systems have been increasingly used in the subsea pipeline applications recently. By replacing the hard centralizers with the softer springs and dashpots to connect the inner and outer pipes, a PIP ...
Passive vibration control of cylindrical offshore components using pipe-in-pipe (PIP) concept: An analytical studyMatin Nikoo, H.; Bi, Kaiming; Hao, H. (2017)© 2017 Elsevier Ltd This paper aims to propose a design of using the revised PIP system to control vortex induced vibrations (VIV) of cylindrical structural components. Analytical studies are carried out to examine the ...