TY - JOUR
T1 - Wave flume tests of a semi-submersible platform controlled by a novel rotational inertia damper
AU - Ma, Ruisheng
AU - Bi, Kaiming
AU - Hao, Hong
N1 - Funding Information:
The authors are grateful for the financial support from Australian Research Council ( DP 190103279 ) for carrying out this research. The first author would also like to thank Curtin University and China Scholarship Council (CSC) for providing the scholarship. The authors would like to acknowledge Prof. Yuxiang Ma from Dalian University of Technology for his helps in the tests.
Funding Information:
The authors are grateful for the financial support from Australian Research Council (DP 190103279) for carrying out this research. The first author would also like to thank Curtin University and China Scholarship Council (CSC) for providing the scholarship. The authors would like to acknowledge Prof. Yuxiang Ma from Dalian University of Technology for his helps in the tests.
Publisher Copyright:
© 2021
PY - 2021/10/15
Y1 - 2021/10/15
N2 - Semi-submersible platforms (SSPs) may subject to excessive wave-induced vibrations, which should be effectively suppressed. In the past decades, some vibration control methods have been proposed and developed, such as the fixed heave plate (FHP) and tuned heave plate (THP). Recently, the authors proposed using inerter-based control device, i.e. rotational inertia dampers (RIDs), to control the vibrations of SSPs, and the control effectiveness has been demonstrated through analytical studies. To further investigate the feasibility and effectiveness of the proposed method, wave flume tests are conducted and reported in the present study. In particular, a 1:70 scaled SSP model was manufactured, and the vibration characteristics of the platform were determined firstly through free vibration tests. After that, the bare and RID equipped SSPs were tested under the regular and irregular waves. For comparison, the SSP equipped with the commonly used FHP was also tested. The experimental results demonstrate that both the RID and FHP systems are effective in reducing the heave motion of SSP. However, compared to the FHP, the RID system showed a much better control performance with a very small physical mass. The wave flume tests demonstrated the superior vibration control performances of RID on SSP.
AB - Semi-submersible platforms (SSPs) may subject to excessive wave-induced vibrations, which should be effectively suppressed. In the past decades, some vibration control methods have been proposed and developed, such as the fixed heave plate (FHP) and tuned heave plate (THP). Recently, the authors proposed using inerter-based control device, i.e. rotational inertia dampers (RIDs), to control the vibrations of SSPs, and the control effectiveness has been demonstrated through analytical studies. To further investigate the feasibility and effectiveness of the proposed method, wave flume tests are conducted and reported in the present study. In particular, a 1:70 scaled SSP model was manufactured, and the vibration characteristics of the platform were determined firstly through free vibration tests. After that, the bare and RID equipped SSPs were tested under the regular and irregular waves. For comparison, the SSP equipped with the commonly used FHP was also tested. The experimental results demonstrate that both the RID and FHP systems are effective in reducing the heave motion of SSP. However, compared to the FHP, the RID system showed a much better control performance with a very small physical mass. The wave flume tests demonstrated the superior vibration control performances of RID on SSP.
KW - Fixed heave plate
KW - Rotational inertia damper
KW - Semi-submersible platform
KW - Vibration control
KW - Wave flume test
UR - https://www.scopus.com/pages/publications/85113582214
U2 - 10.1016/j.oceaneng.2021.109718
DO - 10.1016/j.oceaneng.2021.109718
M3 - Journal article
AN - SCOPUS:85113582214
SN - 0029-8018
VL - 238
JO - Ocean Engineering
JF - Ocean Engineering
M1 - 109718
ER -