Analysis of transmission system of metal belt CVT based on ANSYS/LS-DYNA

Based on the actual parameters of a domestic CVT, the strength and stiffness of some key components of the CVT transmission using the finite element analysis method was analysed in this paper. The results show that the deformation of the cone surface of the pulley is mainly concentrated in the area of inclusion angle of metal belt on pulley; And the maximum deformation of the pulley occurs at the edge of the pulley, and the amount of deformation of the tapered surface of the pulley increases as the speed ratio increases; The maximum stress of the pulley appears at the connection between the pulley and the pulley shaft and at the working radius of the metal belt. When using three keys to transfer power, the stress distribution is uniform. When a single key is used, the stress concentration on the keyway is obvious, and there is a significant eccentric load. The research results can be used to theoretically predict the strength risk and deformation of key components of CVT, and provide a theoretical basis for subsequent structural optimization design.