轴颈倾斜轴承的热流体动力润滑分析

考虑温度对轴颈倾斜轴承润滑的影响,通过解三维能量方程与固体热传导方程,计算轴颈、轴承和润滑油的温度分布,进而对轴颈倾斜轴承进行了热流体动力润滑分析。结果表明:轴承中央截面偏心率较大时,轴颈倾斜角对轴承润滑间隙中油膜温度、最大油膜压力、端泄流量和保持轴承稳定工作的力矩的影响较显著;轴颈倾斜角对油膜层面上的油膜最高温度、温度分布和压力分布的影响较大,油膜厚度较小的区域,油膜压力增大,摩擦生热多,油膜温度上升。

Thermohydrodynamic Lubrication Analysis of Misaligned Journal Bearing

Considered the effect of temperature on misaligned journal bearing,the temperature distributions of journal,bearing and lubricant were calculated,and the thermohydrodynamic performances of misaligned journal bearings were analyzed by solving 3-D energy equation and heat conduction.The results show that when the eccentricity at the mid-plane of bearing increases,the angle of misalignment of the bearing has obvious effect on temperature of lubricating oil film,maximal film pressure,end leakage flowrate and misalignment moment;with the increase of the angle of misalignment,the film thickness decreases,the film temperature increases.