Finite Element Simulation of Deformation in Machining Large Thin-walled Aluminum Alloy Ring

Based on the finite element method,the model was established to predict the deformation of large thin-walled ring during machining.After the simulation of heat treatment and 3D cutting process,the factors of initial residual stress,clamping operation,cutting loads and thermal stresses were investigated to evaluate the machining deformation.The results showed that the main factor which influenced machining deformation was initial residual stress produced in quenching process.Improving the clamping method could decrease the machining deformation caused by the release of residual stresses.In the process of finish machining,the cutting force and cutting temperature were low which caused little effect on machining deformation.