风力发电机组有限元分析时偏航变桨轴承的非线性模拟

Nonlinear Modeling of Yaw and Pitch Bearings in Wind Turbine Finite Element Analysis

偏航变桨轴承是风力发电机组构成和传递载荷的重要部件,风力发电机组主要部件有限元强度分析时,必须正确考虑偏航和变桨轴承滚子和滚道对载荷传递和应力分布的影响,文章使用ANSYS软件中的link10单元组模拟滚子,不仅可以正确考虑轴承的非线性特征,而且可以大大简化计算的模型,使风力机主要部件的有限元强度分析变得快捷和精确。

Yaw and pitch bearings are the important part of wind turbine for transmitting loads. Loads transfer and distribution between ball and race way of yaw and pitch bearings must be properly considered in finite element analysis of wind turbine main components. In this paper the bearing ball is modeled using link10 element group in ANSYS. We can not only consider nonlinear characteristics of bearing, but also greatly simplify the calculation model, which makes the finite element strength analysis of wind turbine main components become fast and accurate.