大型风力机叶片铺层及模态分析

PLY AND MODAL ANALYSIS FOR THE LARGE WIND TURBINE BLADE

使用ANSYS软件,自下而上建立风力机叶片的有限元模型,使用单元类型SHELL 99对叶片模型实行铺层。运用有限元方法,对几组铺层方案进行叶片的模态分析,结果显示大型风力机叶片梁帽的铺层对频率及相对位移影响最大,增加梁帽铺层数可更好地提升叶片的结构动力学性能。

With the use of ANSYS software, a finite modal of wind turbine blade was buih from the bottom up, and the unit type SHELL99 was taken into paving layer for the blade model. Analyzing blade modal of several sets of ply by using the finite element method scheme, the result presents that spar cap of large wind turbine blade plays the most significant impacts on the frequency and the relative displacement, and increasing the total number of spar cap layers can promote blade dynamics performance better.