Analysis On Characteristics Of Fan Blades Impact Of Extreme Environmental Load

Due to the effects of the energy crisis, attaches great importance to the use of renewable energy wind power all over the world, driven by the interests of the wind power generation technology level of all countries in the world have made great progress, which makes the capacity of the wind turbine’s records are constantly being refreshed. Wind resources are very rich in China, with the increase of unit capacity of wind turbine blades of wind turbineand the size of our country, put forward higher and more stringent requirements on the designof China’s wind power generator and the overall level of key technology breakthrough. With global warming, extreme weather increases the probability of extreme temperature,influence of various external equipment can not be ignored. The structure of turbine bladeand the wind is complex, harsh operating environment, to ensure that meet the requirements of leaf age, more factors need to be considered in the design of blade fatigue, so based on the numerical simulation and analysis of wind turbine blade, provide reasonable suggestions for the design of blade structural properties.This paper conducted a preliminary study of composite blades in the common role of complex working conditions and environmental changes of early failure problem, realize the three-dimensional modeling by profili software and UG software, and combined with the climate characteristics of Xinjiang area of extreme environmental load analysis, load for using the GH Baladed software, the gas and the change of temperature load combination, respectively on the glass steel composite material and carbon fiber composite wind turbine blade by finite element strength analysis at different temperatures and wind speeds using ANSYS Workbench,and on this basis to explore the influence of temperature on the fatigue life of FRP compositematerials. Research shows that, extreme weather, extreme temperature on the glass steelcomposite blade is bigger, and the effect of low temperature on leaf is more obvious. The temperature change in the change of the blade material properties atthe same time, will produce the large stress and deformation, resulting in the blade cracks, and then affect theservice life of the wind turbine blade.