Abstract:During the service of rolling bearings,the rollingslip phenomenon occurs and residual stress is generated within the material,which makes the Hertz contact stress can not reflect the real stress state,and causes the Hertz contact stress distribution to deviate from experimental results.It is necessary to calculate the internal stress under rollingslip contact for obtaining the real stress field.A fast and simple calculation method of the internal stress under rollingslip contact was presented to replace the the timeconsuming finite element method.Based on the existing formulas,the stress field in the material under rollingslip contact was calculated by Matlab programming.The variation was compared of the internal stress field in twodimensional and threedimensional rollingslip contact under different friction coefficients.The results show that with the increasing of friction coefficient,the maximum principal shear stress becomes larger,the position is closer to the surface and the angle with rolling direction is smaller.The tangential friction force changes the magnitude and position of the maximum orthogonal shear stress on both sides of the contact point.As friction coefficient increases,the maximum orthogaonal shear stress on one side of the contact point becomes larger and the position becomes closer to the surface,while on the other side,the change shows an opposite trend.The method of internal stress calculation presented is convenient,the calculation results are analytical solutions,which is convenient to combine with other stress fields to obtain the real stress field inside the material.Through case analysis,it is revealed that the real stress field can explain the experimental phenomena better,which is significant to the study of microstructural evolution in bearing materials.