The Dynamic Characteristics Analysis and Damage Diagnosis of the Blade of Wind Turbine (ID: 4-034)

摘要

dynamic characteristics and fatigue damage of GRP blade of 300W wind turbine are investigated in this paper. The natural frequencies of blade are calculated and analyzed by Reyleigh's Method. The natural frequencies and mode shapes are analyzed through test modal analysis. Using finite element method, the model of blade is built, and its dynamic characteristics and dynamic response are calculated. And Consistency of these three analysis results is checked.The structural weakness of blade is found, then an approach to improve blade's design by analyzing its natural frequencies and mode shapes are presented. The fatigue damage characteristics is diagnosed through analyzing dynamic response results of blade.