Abstract: A composite transmission shaft is designed in this paper, which can withstand 100kN·m torque. The study is based on the torsional properties of the carbon fiber composite drive shaft, and the influence of the ply angle and the ply thickness on torsion property of drive shaft is explained in this paper, and its static torsional properties and the critical buckling load is also checked by the finite element method.

Key words: the carbon fiber composite materials, the shaft, torsional