Numerical analysis of three-dimensional thermo-elastic rolling contact under steady-state conditions

Yonghun Yu,Junho Suh

doi:10.1007/s40544-021-0525-1

Abstract

In this study, a three-dimensional thermo-elastic model that considers the interaction of mechanical and thermal deformation is developed using a semi-analytic method for steady-state rolling contact. Creepage types in all directions are considered in this model. For verification, the numerical analysis results of shear traction and temperature increase are compared separately with existing numerical results, and the consistency is confirmed. The analysis results include heat flux, temperature increase, contact pressure, and shear traction. Under severe rolling conditions, the thermal effect changes the behavior of the contact interface significantly. Furthermore, the effects of creepage, rolling speed, and conformity under different rolling and creep conditions are investigated.

Highlights

Rolling contacts are widely used in machine components, such as railwheels, rolling bearings, camrollers, and gear systems [1]
The analysis results of the total frictional heat, temperature increase, contact pressure, and shear traction are presented for the rolling contact of a half-space
The results for the total frictional heat flux, temperature increase, contact pressure, and shear traction are shown in Figs. 6–9, respectively, based on whether thermal deformation was considered

Summary

Introduction

Rolling contacts are widely used in machine components, such as railwheels, rolling bearings, camrollers, and gear systems [1]. Even though most mechanical parts operate in a pure rolling state, minimal sliding is included [3]. The first analytical solutions of the two-dimensional (2D) rolling contact between identical elastic bodies, including the creep phenomenon, were published by Carter [5]. Nowell and Hills [6, 7], Bentall and Johnson [8], and Kalker [9] expanded the existing solutions for 2D steady-state rolling contact between identical elastic cylinders to a solution for two dissimilar elastic cylinders. Johnson [10, 11] considered the effects of lateral creep and spin, which could not be explained in Carter’s study by extending the 2D rolling contact solution to three-dimensional (3D) cases using an approximate method.

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Results

Conclusion