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首页> 外文会议>International ocean and polar engineering conference;International Society of Offshore and Polar Engineers >Fatigue Life Evaluation for Mooring Line and Tower of Floating Wind Turbine
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Fatigue Life Evaluation for Mooring Line and Tower of Floating Wind Turbine

机译：浮式风力发电机系泊索和塔架的疲劳寿命评估

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In this study, fatigue lives of mooring line and tower of a floating windturbine structure were investigated. A SPAR type wind turbine withthree catenary mooring lines, a rotor-supporting tower, and three bladesis considered as an example structure. Mooring line tension and towerbase stress are calculated through a time-domain coupled analysis.Boundary element method (BEM) and convolution are applied tofloating body formulation. The mooring lines, tower, and blades areformulated with catenary elements, elastic beam elements, andaerodynamic elastic rotating beam elements, respectively, using finiteelement method (FEM). By analyzing the mooring line tensions withfatigue curves according to API-RP-2SK and statistical methods suchas simple summation (SS), combined spectrum (CS), and combinedspectrum with dual narrow band (CSDN), fatigue life of a mooring lineis obtained. Fatigue life of a tower is obtained by analyzing the towerbase stress with fatigue curves according to API-RP-2A-WSD and thestatistical methods SS, CS, and CSDN. From the numerical results,fatigue features of mooring line and supporting tower are investigatedand compared. Through an analysis of fatigue life by changingbreaking strength of mooring line, the effect of breaking strength onfatigue life variation is also discussed.
机译：在这项研究中，系泊缆和浮塔的疲劳寿命 涡轮结构进行了研究。具有以下功能的SPAR型风力发电机 三条悬链线，一架转子支撑塔和三片叶片 被认为是示例结构。系泊缆线张力和塔架 基本应力通过时域耦合分析计算。 边界元法（BEM）和卷积应用于 浮体配方。系泊缆，塔和叶片是 由悬链线元素，弹性梁元素和 气动弹性旋转梁单元，分别使用有限元 元素方法（FEM）。通过分析系泊索的张力 根据API-RP-2SK的疲劳曲线及其统计方法 如简单求和（SS），组合频谱（CS）和组合 双窄带频谱（CSDN），系泊缆的疲劳寿命 获得。通过分析塔来获得塔的疲劳寿命 符合API-RP-2A-WSD规定的具有疲劳曲线的基本应力 统计方法SS，CS和CSDN。从数值结果来看 研究了系泊缆和支撑塔的疲劳特性 并进行比较。通过分析疲劳寿命的变化 系泊缆的断裂强度，断裂强度对 还讨论了疲劳寿命变化。

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