Dynamic Analysis of Mooring Cables with Application to Floating Offshore Wind Turbines

被引:7
作者
Petrone, Crescenzo [1 ]
Oliveto, Nicholas D. [2 ]
Sivaselvan, Mettupalayam V. [2 ]
机构
[1] Univ Naples Federico II, Dept Struct Engn & Architecture, Via Claudio 21, I-80125 Naples, Italy
[2] SUNY Buffalo, Dept Civil Struct & Environm Engn, 212 Ketter Hall, Buffalo, NY 14260 USA
关键词
Cables; Nonlinear dynamics; Large deformations; Energy dissipation; Fluid-structure interaction; Floating offshore wind turbine; SIMULATION;
D O I
10.1061/(ASCE)EM.1943-7889.0000999
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Floating offshore wind turbines are recently being considered widely for adoption in the wind power industry, attracting interest of several researchers and calling for the development of appropriate computational models and techniques. In the present work, a nonlinear finite-element formulation is proposed and applied to the static and dynamic analysis of mooring cables. Numerical examples are presented, and in particular, a mooring cable typically used for floating offshore wind turbines is analyzed. Hydrodynamic effects on the cable are accounted for using the Morison approach. A key enabling development here is an algorithmic tangent stiffness operator including hydrodynamic coupling. Numerical results also suggest that previous empirical hydrodynamic coefficients could be obtained by fully coupled fluid-structure interaction. Convergence-rate and energy-balance calculations have been used to demonstrate the accuracy of computed solutions. The introduction of the developed cable model in a framework for the study of the global behavior of floating offshore wind turbines is the subject of the current work. Source code developed for this work is available as online supplemental material with the paper. (C) 2015 American Society of Civil Engineers.
引用
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页数:12
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