重型机械Issue(2)：21-24,4.
基于流固耦合的风力机叶片疲劳破坏分析
Fatigue failure analysis of wind turbine blade based on fluid structure interaction
摘要
Abstract
The analysis of wind turbine blade stress under the condition of fluid solid coupling is great siguificance to the analysis of the fatigue failure of large wind turbine.In this paper,1.5 MW wind turbine blade as the research object,carry out simulation analysis coupling dynamic performance in wind turbine gas flow based on computational fluid dynamics (CFD) and Ansys Workbench,and analysis the load data transfer problem between taking aerodynamic load and the rotating inertial load as the main load and the load of fluid solid coupling interface of structural deformation the wind turbine blade.The results show that the stress at the trailing edge of the blade is increasing,from the maximum chord length to near the tip position of 1/3,stress concentration appears at the root of the blade.The maximum stress is 5.6 MPa,and the position is easy to crack damage,which is close to the fracture site in the reality operation of wind turbine.The rationality of the analytical method used in this paper is proved.关键词
流固耦合/风力机叶片/疲劳破坏/数据传递Key words
fluid structure interaction/wind turbine blade/fatigue failure/data transfer分类
能源科技引用本文复制引用
张亚楠,周勃,孙成才,陈长征..基于流固耦合的风力机叶片疲劳破坏分析[J].重型机械,2017,(2):21-24,4.基金项目
国家自然科学基金项目(51575361) （51575361）
中国博士后科学基金项目(2014M560220) （2014M560220）
辽宁省百千万人才工程项目(2015049) （2015049）
