| In the previous three decades, technologies involved in machine tools and machining operations have experienced remarkable changes. Despite these advances, unstable cutting conditions, referred to as chatter, remains an obstacle to high material removal rates.;Chatter has been a limiting factor for high productivity and part quality. The well-known stability lobe diagram, which relates the spindle speed and axial depth of cut to machining stability may be used to select stable operating parameters.;This thesis compares two frequency-domain stability analyses, i.e., the average tooth angle approach and the Fourier series approach, with time-domain simulation of milling. The simulations were performed for different cases of both up milling and down milling at different radial immersions from low (5%) to slotting (100%).;In order to enable a direct comparison of the time-domain simulation to the analytical stability limits without user interpretation, a new stability metric is defined in the simulation to automatically identify the stability at a particular spindle speed and axial depth of cut. |
