Influence of Bearing Structure on Bearing and Thermal Characteristics of Thrust Bearings
In order to explore the influence of the bearing structure of the gas foil thrust bearing on the bearing characteristics and thermal characteristics,a two-dimensional simulation model of the thrust bearing was established. By coupling solving the energy equation and Reynolds equation of non-isothermal compressible gas,the gas film pressure field and temperature field of the bearing were obtained,and a three-dimensional simulation model of the thrust bearing was established for verification. The influence of bearing structure (including foil taper ratio,foil number and foil taper height) on bearing and thermal characteristics was studied by using bearing two-dimensional model. The calculation results show that the optimum taper ratio is 0.35～0.5,the optimum number of foils is 6,and the optimum taper height is 0.04mm～0.06mm when the minimum film thickness is 0.01mm. Bearing heat dissipation decreases with the increase of taper ratio and taper height,and increases with the increase of foil number. In order to reduce bearing temperature,bearing taper ratio and taper height can be appropriately increased.
Gas Foil Thrust BearingBearing StructureBearing CharacteristicsThermal Characteristics
万方数据
维普
