Aiming at making the wind turbine have more stable work performances and prolonging the service life of the wind turbine blades

strength analysis on the wind turbine blade airfoil was carried out. By taking the NACA0015 blade( symmetric airfoil) as the object

its three-dimensional model was established and the rotation field and associated boundary conditions were set. The fluid solid coupling method was adopted to conduct aerodynamic performance analysis on the vertical axis wind turbine blade

by using the ANSYS-CFX software. The results show that

at room temperature and atmospheric pressure

with wind speed of 10 m / s and rotor speed of 80 r / min

the maximum deformation of the blade lied in the blade trailing edge out

with amount of 3. 961 × 10- 4mm. The deformation amount had a liner relationship with the blade thickness. Properly increasing the airfoil trailing edge thickness can enhance the airfoil strength

making it have good deformation resistance. Therefore

increasing the blade thickness can reduce the blade deformation and prolong the blade's service life.