Finite element simulation on hard turning plain bearing outer  ring with residual stress

KONG Kaibin, YANG Xiaoxiang

（College of Mechanical Engineering & Automation, Fuzhou University, Fuzhou 350116, China）

Abstract: Aiming at the problem that high residual stresses were presented in the plain bearing outer ring after cold forming process, the influence of multiple hard cutting plain bearing outer ring to residual stress and bearing clearance distribution were investigated. The simulation analysis of forming process and cooling and springback process of selflubricating plain bearing were carried out, the analysis of multiple hard cutting bearing steel GCr15 with residual stress existed in plain bearing outer ring was developed by finite element method and the constitutive model, the damage initiation model and the damage evolution model were established, the thermalmechanical coupling finite element method was presented. The stress distribution and the springback of plain bearing outer ring were evaluated by the Abaqus software. The results indicate that the finite element analysis can predict the influence of hard cutting to the residual stress of the selflubricating plain bearing and the changes of clearance between the inner ring and outer ring, it has important theoretical guiding significance that releasing residual stress by hard cutting to control and improve the workpiece quality.

Key words: hard turning; thermalmechanical coupling; residual stress; FEM(finite element method)