Time domain simulation of turning process considering amplitude-dependency in process damping

抄録

This paper presents a novel chatter simulation technique considering amplitude-dependent flank contact force, i.e., process damping force. In the conventional analysis model of process damping, the amplitude and tool shape dependencies could not be considered, and hence prediction of the resultant amplitude under the quasi-stable process is difficult in the time domain simulation. In this study, a new model utilizing finite element simulation is developed, where nonlinearity of process damping is considered. Process damping coefficients are quantitatively estimated in a frequency domain. Then, process damping force is estimated in time domain by utilizing the process damping coefficients. A series of face turning test clarified that the turning process with process damping can be estimated accurately by using the proposed model.