Analysis for deformation and dynamic characteristics about thin-wall part of aircraft

Based on the model of helical ending milling force,deformation of thin-wall part is calculated by FEM.The optimization parameters of cutting width are determined,then the surface accuracy of part is improved.According to analysis for the dynamic characteristic,the displacement response curves are plotted.The cutting speed is chosen in stable states on the basis of the curve,which will grantee qualification of milling.Results of analysis for——shaped thin-wall part and the local thin-wall part of aircraft.Results show that they have the familiar dynamic characteristic.The locality of large and complex work pieces can be parameterized modeling and automatically analyzed.It will not only provide help for optimization of parameters in the milling but also improve the efficiency of analysis.