Abstract: In order to further reduce the weight and load of low wind speed wind turbine blades, a design model of glassy carbon hybrid blade lamination structure was established based on a 2 MW wind turbine blade with a length of 54 meters. Based on the parametric modeling and analysis methods of MATLAB and ANSYS, the strength and load of the optimized glassy carbon hybrid laminated blade were carried out, as well as the characteristic, mass and maximum deformation analysis. The results show that the optimized blade mass decreases by 5.34%, and its dynamic load and tip deformation decrease significantly. On the promise of ensuring the same stiffness before and after optimization, the maximum tensile stress of the optimized blade decreases by 28.66%. This study provides important reference for lightweight design of low wind speed wind turbine blades, which is helpful to reduce the cost of wind turbine blades.

Key words: carbon fiber composites, layer structure, optimum design