Hertzian Contact Pressure Analysis of Frictional Coupling Elements of Multidisk Stepless Transmission With Initial Line Contact

This paper presents an analysis of the contact pressures and the contact area of mating disks in a frictional transmission. Hertz’s formulations are adopted to determine the maximum contact pressures as well as the size of the contact area resulting from elastic deformation due to the clamping force. Hertz’s formulations are expressed in terms of geometrical features of the active surface of mating disks. The obtained relationships can be readily applied for quantitative estimation of the contact pressures and the contact area parameters for different ranges of transmission ratio. Samples of numerical results are presented in graphical form.