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

• 作 者: 王扬 吴雪峰
• 机 构: School of Mechatronics Engineering,Harbin Institute of Technology,
• 出 处: Journal of Wuhan University of Technology(Materials Science
• 发表日期: 2009年S1期
• 关键词: walled machining cutting quenching workpiece machined aerospace finish milling d

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.

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 affected machining deformation was initial residual stress produced in quenching process. Improping the clamping method could decrease the machining deformation caused by the release of the residual stresses. machining, the cutting force and cutting temperature were low which caused little effect on machining deformation.