Abstract: In view of the unreasonable lamination in the finite element model of wind turbine blades at present, taking a 1.5 MW wind turbine blade as the research object, Solidworks software is used to generate three-dimensional model of blades, which is then imported into thelarge-scale finite element software Abaqus, and the zonal lamination can be generated according to the theory of blade lamination.The finite element model of the blade is used to make it closer to the true lamination condition of the blade. In the finite element numerical calculation, vibration characteristics of the blades and stress distributions in the blades under the limit wind speed of 50 m/s are analyzed. Our predicted results show that the established blade lamination model meets the design requirements in terms of mode, strength and rigidity. The dangerous section of the blade is located at about 1/3 from the tip of the blade, and the stress is mainly distributed at 1/3~2/3 from the tip of a blade, and the main bearing structure is the main beam and web of a blade.

Key words: composite material, wind turbine blade, layup, vibration characteristics, Static analysis