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Fatigue reliability of offshore wind turbine systems

机译:海上风力发电机系统的疲劳可靠性

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Optimization of the design of offshore wind turbine substructures with respect to fatigue loads is an important issue in offshore wind energy. A stochastic model is developed for assessing the fatigue failure reliability. This model can be used for direct probabilistic design and for calibration of appropriate partial safety factors / fatigue design factors (FDF) for steel substructures of offshore wind turbines (OWTs). The fatigue life is modeled by the SN approach. Design and limit state equations are established based on the accumulated fatigue damage. The acceptable reliability level for optimal fatigue design of OWTs is discussed and results for reliability assessment of typical fatigue critical design of offshore steel support structures are presented.
机译:就疲劳载荷而言,优化海上风力涡轮机子结构的设计是海上风力发电中的重要问题。建立了用于评估疲劳失效可靠性的随机模型。该模型可用于直接概率设计,以及用于海上风力涡轮机(OWT)钢结构的适当局部安全系数/疲劳设计系数(FDF)的校准。疲劳寿命通过SN方法建模。根据累积的疲劳损伤建立设计和极限状态方程。讨论了OWT最佳疲劳设计的可接受可靠性水平,并给出了对海上钢支撑结构典型疲劳关键设计可靠性评估的结果。

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