The finite element method application to linear closed loop steady system vibration analysis

摘要

An original method for steady, linear, mechanical closed loop system vibration analysis is presented in the paper. The finite element method, the abilities of which are extended, including the coupling element term, is applied to modelling. Theproblem of excited periodic vibration has been formulated and resolved numerically using the Fast Fourier Transform (FFT) for this purpose. An illustrative example is presented using a computer model of a real milling machine to consider stationarycutting conditions. Some comparative calculations for various types of feedback interaction are performed and time plots for steady-state vibration are obtained.