玻璃钢/复合材料Issue(1)：12-17,6.
风电叶片尾缘结构稳定性研究
STUDY ON THE STABILITY OF WIND TURBINE BLADE TRAILING EDGE STRCTURE
摘要
Abstract
Local buckling of trailing edge near the maximum chord length is one of the main failure modes of wind turbine blades.The finite element method is used to simulate the buckling mode and the enhancement of the trailing edge with different relative thickness airfoils.Three blade sections with relative thickness of 19％,24％ and 35％ are simulated to study the effects of laminates,filling of foam or balsa on the trailing edge buckling.The buckling analysis with finite element eigenvalue shows that the overlay of the blade shell at trailing edge can effectively inhibit the displacement and improve the stability of the trailing edge.Moreover,the effect of overlay increases with the decrease of airfoil thickness.But,the mass grows quickly with layers.On the other hand,filling of PVC foam with appropriate length at the trailing egde can also obviously improve the structure stability but rarely increase the mass.Compared with PVC foam,balsa has similar effects.关键词
风电叶片/尾缘屈曲/有限元/实体单元Key words
wind turbine blade/trailing edge buckling/finite element/solid element分类
通用工业技术引用本文复制引用
袁巍华,吴玉国,王国付,秦志文,张磊..风电叶片尾缘结构稳定性研究[J].玻璃钢/复合材料,2018,(1):12-17,6.基金项目
自然科学基金(51476171) （51476171）
863课题(2012AA051303) （2012AA051303）
