Analysis of the relationship between contact deformation and contact force of bearing roller based on plastic deformation

In the finite element analysis of large multi-roll turntable bearing, in order to avoid the high nonlinearity of the model, rod element is usually used to replace the contact relationship between the roller and the raceway. Therefore, determining the relationship between the contact deformation and the contact force of rod element is the key to establish the correct finite element model of large multi-roll. Based on Hertz contact theory, this paper analyzed the influence of rolling element contact deformation parameters, based on the materials on the basis of the plastic deformation of single roller extrusion model and extract the relationship between the rolling element contact deformation and contact curve, the analytical solution compared with Hertz contact theory and the results show that the finite element model considering plastic deformation can better reflect the rolling body contact process of plastic deformation, the relationship between the contact deformation and contact pressure curve showing a strong nonlinear.