Torsional vibration analysis method and numerical comparison of large turbine compressor unit

Large turbine compressors;  Torsional vibration analysis method;  Numerical comparison

The rotor system of large turbine compressor units is gear-coupled shafting, and torsional vibration analysis is commonly used in engineering to carry out torsional vibration analysis on such units. These two methods are compared and analyzed with the bending and torsion coupling calculation method through numerical calculation, and the results show that the folding or torsional coupling algorithms widely used in engineering cannot fully reflect the torsional dynamic characteristics of this type of unit, and there are defects. In order to avoid all harmful torsional vibration of the unit, the influence of the transverse vibration of the rotor of the unit on the torsional vibration must be considered when the torsional vibration analysis of the unit is carried out, and the bending and torsional coupling vibration theory is applied for system analysis.