Vibration analysis and cutting simulation of structural nonlinearity for machine tool

The dynamic behavior of a machine tool is affected by the forces applied to the structure. However, cutting processes have been analyzed considering the linear systems in most of the studies so far. In this study, a machine tool structure was excited by using an electromagnetic shaker and the force-dependant frequency response characteristics were measured. Based on the measured result, the nonlinear characteristics of the machine tool structure was identified, and a machine tool with the nonlinear characteristics was mathematically reproduced, which enabled to analyse the nonlinear frequency response characteristics and simulate cutting processes. (c) 2021 CIRP. Published by Elsevier Ltd. All rights reserved.

Automated summary

The study investigates the nonlinear characteristics of a machine tool structure excited by an electromagnetic shaker and measures the force-dependant frequency response. Based on the results, a machine tool with nonlinear characteristics is mathematically reproduced to analyze nonlinear frequency response and simulate cutting processes.