Implementation and verification of cable bending stiffness in Moordyn

Matthew Hall*, Senu Sirnivas, Yi-Hsiang Yu

*此作品的通信作者

研究成果: Conference contribution同行評審

1 引文 斯高帕斯(Scopus)

摘要

The relatively large motions experienced by floating wind turbines and wave energy converters pose a challenge for power cables, whose internal components provide significant bending resistance and are sensitive to deformation. The behavior and associated design considerations of power cables in these highly dynamic applications make coupled analysis relevant for design. Bending stiffness capabilities have recently been added to the lumped-mass mooring dynamics model MoorDyn to enable simulation of dynamic power cables. MoorDyn is a common modeling choice for floating wind energy simulation (often coupled with OpenFAST) and floating wave energy converter simulation (often coupled with WEC-Sim) but the model's previous line elasticity formulation only considered axial stiffness. To properly capture the dynamics of power cables, a bending stiffness model has been added that approximates cable curvature based on the difference in tangent vectors of adjacent elements. The resulting bending moment is realized by applying forces on adjacent nodes, enabling cable modeling while leaving the underlying lumped-mass formulation unchanged. In this paper, the new bending stiffness implementation is verified in static conditions against analytical solutions and then in a dynamic power cable scenario in comparison with the commercial simulator OrcaFlex. The dynamic scenario uses prescribed motions and includes wave loadings on the cable. Results indicate correct implementation of bending stiffness and show close agreement with OrcaFlex.

原文English
主出版物標題Proceedings of the ASME 2021 3rd International Offshore Wind Technical Conference, IOWTC 2021
發行者American Society of Mechanical Engineers (ASME)
頁數6
ISBN(電子)9780791884768
DOIs
出版狀態Published - 4月 2021
事件ASME 2021 3rd International Offshore Wind Technical Conference, IOWTC 2021 - Virtual, Online
持續時間: 16 2月 202117 2月 2021

出版系列

名字Proceedings of the ASME 2021 3rd International Offshore Wind Technical Conference, IOWTC 2021

Conference

ConferenceASME 2021 3rd International Offshore Wind Technical Conference, IOWTC 2021
城市Virtual, Online
期間16/02/2117/02/21

指紋

深入研究「Implementation and verification of cable bending stiffness in Moordyn」主題。共同形成了獨特的指紋。

引用此