Study of Analysis Method for Hertz Contact Problem in Friction Drive

In order to deal with Hertz contact problem of friction drive in continuously variable transmission (CVT), two methods were proposed in this paper. One is a numerical computation method by MATLAB to solve the elliptic integral equations of Hertz contact, while the other is a finite element method (FEM) which uses the ANSYS Workbench to calculate the point contact between two elastic bodies. The computation results of Hertz contact problem of friction drive in a new CVT proposed by our research group show that, compared with a look-up table method, the numerical solution of MATLAB has many advantages such as high precision and less computational cost, while the finite element method has more simplicity and better visibility. The present methods can provide a reference for the solution of Hertz contact problem of common friction drive.

Stressed State in the Roller Contact Zone (Area) and the Bearing Ring Finite Length

The calculation of the roller contact and the bearing ring of the finite length is presented in this work. The influence of the end effect action, on geometry of the contact platform and the stressed state in the vicinity of the roller edge has been taken into account. The solution results are compared with analytical solution of the Hertz contact problem.