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Estimation of Energy Efficiency of Oscillations of Rotors on Radial Fluid Film Bearings

  • S. Majorov
  • L. Savin
  • A. Babin
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

The following parameters have the most influence on the dynamics of a high-speed turbomachine’s rotor system: mass and stiffness distribution of a rotor; damping properties of the materials of rotor’s elements; location of bearings, sealings, and dampers; type, design, and operational conditions of bearings, sealings, and dampers; mass and inertia characteristics of machine’s housing; and operational conditions of a turbomachine itself. It should be noted that the presence of fluid film bearing complicates the dynamic analysis. It is thus a quite urgent task to search for some rational parameters when a rotor system is under design and preliminary calculation, which in many cases leads to the problems of an optimal parametric design. One of the main yet controversial problems of parametric design in the field of rotor system dynamics is the determination of quality indicators for a particular case of a rotor system. The present paper proposed a criterion based on the efficiency of rotor system’s input energy. The analysis of a number of parameters’, e.g., values of constant external forces (rotor’s mass), varying external forces (imbalance), and types of bearings, influence on this criterion has also been carried out.

Keywords

Energy efficiency Rotor system Fluid film bearing Rotor dynamics Hydrodynamic lubrication 

Notes

Acknowledgements

This work was partly supported by an RSF grant, project 16-16-00186 “Planning of optimal energy-efficient trajectories of rotors in mechatronic modules in complex rheology media”.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Orel State UniversityOrelRussia

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