Analyses of Rotating Member Vibration Characteristics in the Horizontal Screw Decanter Centrifuge

3-D finite element models of the bowl-axis and the screw-axis of a horizontal screw decanter centrifuge were established by beam elements separately.The consequence of model analyses was accordant with the calculation results of the transfer matrix method,which verified the reliability of the ANSYS analysis method.The models of the drum-axis and the screw-axis were connected by the combine elements,and the model analysis results demonstrated that,the working speed of the machine is far less than the first-order critical speed,and the sympathetic vibration would not happen to the machine in usual working speed.