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Publications
Zhang, LD., Wang, J., Zhao, XL., Geng, J., Hu, ZQ. and Guedes Soares, C. (2025), Numerical Investigation on Motion Response of Modular Semi-submersible Floating Platform in waves, 4th World Conference on Floating Solutions (WCFS 2024), 2-4 December, Hong Kong, China, pp. 821-831.
Modular semi-submersible floating platforms have recently gained popularity in offshore renewable energy applications. In this paper, the hydrodynamic responses of such platforms are investigated numerically. A constraint matrix is derived that characterizes the motion relation of the interconnected multi-module system. The frequency-domain motion equation is formulated using the Lagrange multiplier method. Parametrical investigations are conducted to explore the hydrodynamic performance of the modular semi-submersible floating platform in waves. The effects of incident wave angle and the spacing between adjacent modules are further investigated. The numerical results of the hydrodynamic responses of the multi-module system are presented, and the forces acting on the connectors are analyzed. It is found that the maximum responses in heave and pitch degree-of-freedom are observed for the module at the lee side. The motion responses of the modules are relatively larger at the lower frequency range. In general, the vertical forces acting on connectors at the middle and high-frequency ranges are larger than at the low-frequency range. The findings can provide valuable references for designing and constructing floating modular structures.
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