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Influence of friction‐induced heating on the dynamic behaviour of rotors supported by journal bearings
Author(s) -
Irmscher Cornelius,
Nitzschke Steffen,
Daniel Christian,
Woschke Elmar
Publication year - 2018
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201800412
Subject(s) - bearing (navigation) , isothermal process , thermal conduction , rotor (electric) , fluid bearing , mechanics , materials science , thermal , mechanical engineering , thermodynamics , engineering , computer science , physics , composite material , lubrication , artificial intelligence
Different oil‐film‐induced instabilities have to be accounted for when designing rotor systems supported by hydrodynamic bearings. Because the system's behaviour is strongly dependent on the thermal state, this contribution presents an approach for calculating the thermo‐hydrodynamic behaviour of a bearing‐rotor‐system. It incorporates a solution of the three‐dimensional energy equation for the fluid film and accounts for heat conduction through the surrounding parts of the bearing. The simulation model is validated with the help of experimental data and improvements are pointed out compared to an isothermal approach.