The computer analysis of the temperature fields arising in bearing node at rotation of a rotor

Thermal calculation for modern high-speed bearings has crucial importance and is reduced to definition of temperature of the bearing, and also those operating conditions of a turbomachine necessary that the temperature in the bearing was kept in allowable limits. It is essential to simplify and lower complexity input of designing bearing nodes of turbomachines in view of the requirements showed to a temperature mode, the computing experiment based on use of engineering packages of the finite-element analysis allows. Authors developed technology of such calculation on the basis of finite-element package LS-DYNA, and computing experiment by definition of a field of temperatures of a rotating rotor arising at friction about the bearing is carried out. As base model the threedimensional model of contact pair the rotor - bearing turbocompressor with rigidly fixed bearing is accepted, between shaft of a rotor and the bearing the contact simulating liquid friction is set. During calculation for different high-speed modes of rotation of a rotor and factors of liquid friction propagations of fields of temperatures, thermoelastic pressure fields and deformations in a rotor and the bearing are obtained, quantitatively described thermoelastic stress-deformed condition of bearing node. The obtained results can be directly used at designing turbocompressors and their modular nodes