Study on Prediction of Machining Distortion for Titanium Alloy Aircraft Monolithic Component by FEM

A physics-based material processing simulation is approached to research the machining distortion for titanium alloy aircraft monolithic component by the finite element method (FEM). Several key technologies, such as material constitutive model, material removal methodology of machining process, determination and application of cutting loads, have been implemented to improve the accuracy of finite element simulation. To verify the FEM result, an experiment is carried out. The distortion position and dimension of aircraft monolithic component resulting from FEM show a good agreement with the experiment result, which indicates that the key technologies presented in the paper are practicable and can be used to simulate the machining process of monolithic component to predict its distortion.