In order to evaluate the static strength and fatigue reliability of wind turbine supporting structure, by establishing the finite element model, a numerical simulation for the static strength reliability of wind turbine supporting structure under the three conditions of rated, cut-out and extreme wind speed is carried out to get the maximum stress and displacement value of the supporting structure and to determine the key points. Then, a fatigue analysis of the key points is carried out by using the FTCALC module. The results show that the static strength and fatigue properties of the wind turbine supporting structure are reliable in the setting of boundary conditions, the two key points of the supporting structure are respectively located at the joint of one and two stage flange and the joint of the bottom of the tower and the foundation,and the Mises equivalent stress value is the maximum under the rated wind speed.%为评估风电支撑结构静强度和疲劳可靠性,利用ANSYS软件建立有限元模型,对风电支撑结构在额定、切出和极限风速三种工况下的静强度可靠性进行数值模拟,分析其在多荷载作用下的最大应力和位移值,确定结构关键点,并应用FTCALC模块对结构关键点进行了疲劳分析.结果表明:风电支撑结构在设定边界条件下的静强度和疲劳性能是可靠的,其两个结构关键点分别位于塔筒一、二级法兰连接处和塔筒底部与基础连接处,且在额定风速工况下的Mises等效应力值最大.
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