Analysis of the Turbocompressor Rotor Dynamics Taking into Account Features of Active Magnetic Bearings Using Specialized Computing Systems

The article includes an analysis of various computational engineering analysis tools in terms of evaluating the dynamics of rotors in active magnetic bearings (AMBs). An analysis of the dynamics of the rotor of a turbocompressor of a gas-pumping unit is considered, taking into account AMBs which are used as systems for control of motion stability. Two different software packages were used to simulate the rotor dynamics of the rotor-AMBs system: the first is a package for general technical engineering analysis and the second is a specialized computing system for the simulation of rotor dynamics characteristics of different rotor-bearing systems. Both programs are based on the application of finite element methods. The work aims to identify the advantages and disadvantages of using different software packages for modelling and calculating rotor dynamics characteristics of the rotors supported by AMBs. The identification is based on various static and dynamic analyses. The results of numerical experiments are presented in the form of calculations of critical speeds and modes of oscillation (precession), as well as maps of the critical speeds and frequency–response characteristics. This makes it possible to judge the possibility of the resonance regimes of the system and prevent dangerous situations. Obtained results indicate the accuracy and adequacy of the results generated in different software packages. The results could be used to determine the applicability of certain software packages depending on the specific needs of researcher.