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Lookup NU author(s): Professor Zhiqiang Hu
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© 2017 Taylor & Francis Group, London. In recent decades, it has been found that stiffness of flexible bodies can be increased under the circumstance of large overall motions. But the conventional hybrid-coordinate dynamical model can’t reflect this dynamic stiffening effect clearly enough. Since the slender blades of the floating offshore wind turbine usually work with high rotation-speed, the dynamic stiffening effect of flexible blades should be taken into consideration. In this paper, a higher-order coupling model is proposed and then incorporated into an in-house program, DARwind, to investigate dynamic stiffening characteristics of the blades and its effects on a spar-type floating offshore wind turbine. It is found that the additional stiffness of slender blades increases with the augment of the rotating speed in the higher-order coupling model. Furthermore, dynamic characteristics of the spar-type floating offshore wind turbine in the higher-order coupling model are different with those obtained by the traditional hybrid-coordinate dynamical model.
Author(s): Chen J, Hu Z
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: Progress in the Analysis and Design of Marine Structures: Proceedings of the 6th International Conference on Marine Structures (MARSTRUCT 2017)
Year of Conference: 2017
Online publication date: 24/04/2017
Acceptance date: 02/04/2016
Publisher: CRC Press/Balkema
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