Abstract
The importance of motion compensation equipment in mitigating wave-induced vessel motion has attracted widespread attention, and many scholars have researched and developed multi-degree-of-freedom motion compensation equipment for marine engineering. However, while compensating for wave-induced motions, motion compensation equipment also has unknown effects on the vessel's motions. To investigate the dynamic response of the vessel under the action of motion compensation equipment, a co-simulation system considering hydrodynamics, multi-body dynamics and control strategy is developed to analyze the dynamic behavior of the motion compensation equipment and the installed vessel. The simulation results show that as the load on the motion compensation equipment increases, the vessel becomes more unstable during the compensation process. A scaled-down shipboard Stewart platform prototype was fabricated and the reliability of the simulation was experimentally investigated in a laboratory tank. The numerical simulation and experimental results show good agreement, the findings of this study can guide the design and operation of the motion compensation equipment.
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