风力发电机组叶片有限元建模及静力学探析

Finite Element Modelling and Hydrostatic Analysis of Wind Turbine Blades

以1.5 MW风力发电机组复合材料叶片为研究对象,采用三维建模软件SolidWorks建立复合材料叶片三维几何模型,依据相关标准计算叶片在额定风速10.4 m/s下的外界载荷,并对复合材料叶片4个部位施加远端力和力矩模拟风力载荷,准确分析复合材料叶片在额定风速下各轴向上的应力和位移,并对其材料强度和位移与安全许用规范进行对比分析。结果表明:复合材料叶片各个轴向上的位移和应力均符合工程规范标准及设计要求。可为风力发电机组叶片设计、制造提供参考。

A 1.5 MW wind turbine composite blade is taken as the study object.The three-dimensional modeling software SolidWorks is applied to establish the geometric model of the composite blade.The external load of the blade at rated wind speed of 10.4 m/s was calculated according to the relevant standards,and the wind load was simulated by applying distal forces and moments to four parts of the composite blade.The stresses and displacements in each axis of the composite blade at the rated wind speed are accurately analyzed.Its material strength and displacement and safety allowable specification are compared and analyzed.The results show that the displacement and stress of the composite blade in each axial direction meet the engineering standards and design requirements.It is valuable for wind turbine blade design,manufacturing to provide guidance significance.