风力机叶片有限元建模的两种方法

Two ways of finite element modeling of the wind turbine blade

风力机叶片模型复杂,其有限元模型的建立是其静力学与动力学有限元分析的瓶颈。建立准确的几何模型是提高有限元计算结果的精确度的有效途径。有限元ANSYS的分析模型基本上可由两个途径得到,一是ANSYS直接建模,二是其它三维软件模型导入ANSYS。通过研究有限元模型建立的两种方法,得到了ANSYS直接建模的一种有效方法并讨论了CATIA叶片模型导入ANSYS时存在的问题及其解决方案,提高了叶片复杂模型建立的准确度与效率。

Turbine blade is very complicated that the establishment of its finite element model is the bottleneck in static and dynamic finite element analysis. This paper gives two examples of the finite element modeling of wind turbine blade in ANSYS by means of 1.2 MW wind turbine blade. One is to modeling in ANSYS directly, and another is by importing CATIA model. These methods improved the accuracy and the efficiency of static and dynamic analysis.