Research On Key Techniques In FEM Simulation Of Machining Deformation For Aeronautical Monolithic Component

The deformation of aerospace monolithic components due to CNC machining is one of the problems which aeronautical manufacturing technology has to face up to. So,it has great academic and engineering value for the prediction and improvement of aerospace monolithic components machining deformation. In view of the complex feature of this problem,a method combined experiments with as well as computer analysis is adopted in this dissertation.To analyze the relative position between tool and workpiece in assemble model of finite simulation, and load the tool with parallel motion and rotation, a finite element model based trochoid motion is built. In order to lower the simulation time and error, optimize the finite element model with advanced meshing method. By considering performance parameter of the workpiece, a simulation of milling force on the aerospace monolithic components was researched by using ABAQUS. A loading method was presented by studying machine deformation of the aerospace monolithic components. The machining deformation rules of typical aerospace monolithic components were analyzed by the method. The machining deformation rule of monolithic component caused by release of residual stress is researched preliminarily. The finite element model was verified feasibility, and the result is reliable. Some valuable conclusions were gained and it could provide references for improving productivity and the further study of controlling machining deformation of aerospace monolithic components.