ANALISA PERILAKU DINAMIK MESIN FRAIS DENGAN MENGGUNAKAN FINITE ELEMENT METHOD (FEM)

In the field of structural analysis of machine tools, Finite Element Analysis has become one of the most powerful to solving vibration problems and dynamic behavior of the structure. In this final project, main structure of milling machine is modelyzed using ANSYS Workbench 11.0 to obtain dynamic behavior of milling machine. Modal analysis was carried out to obtain the natural frequencies and its mode shapes and harmonic response analysis was used to determine frequency response of the structure. In operating machine tools usually has many kind of faults. Mass unbalance was observed in this simulation. Simulation was carried out at different spindle speeds and the results show in FFT (Fast Fourier Transform) with comparison of normal condition. Keywords: dynamic behavior, milling machine, modal analysis, natural frequency, mode shape, mass unbalance