抄録
The fatigue failure mechanism of the CVT rubber belt was investigated using some experiments, FEM analysis and a simplified mechanical analysis. There are three major failure modes for the CVT rubber belts, namely adhesive rubber crack, bottom land crack and tension rubber crack. The paper focused on the adhesive rubber crack initiation mechanism. The crack was initiated along the interfaces between the adhesive rubber and the fiber reinforced rubber. The mechanical analysis revealed that the de-bonding of the interface was explained by the dishing deformation of the CVT belt that was wounded around the pulley. The contribution of the geometrical factors of the belt and pulley on the failure initiation was estimated by using the mechanical analysis.
