动静力混合润滑轴承三维温度场的研究

Three-dimensional Temperature Field Analysis of Hybrid Journal Bearing

联立求解广义雷诺方程、三维能量方程、三维固体热传导方程及载荷平衡方程、油腔流量守恒方程和油腔能量守恒方程并考虑粘度随温度及压力、密度随粘度及压力的变化,在油膜与轴瓦界面使用热流连续性边界条件,得到动静力混合润滑轴承的三维温度场。结果表明动静力混合润滑轴承的温度分布比较均匀,在外载荷相同时,供油压力高时的最高温度略低于供油压力低时的情况。

The simultaneous solution of the generalized Reynolds equation, three-dimensional energy equation, three-dimensional heat transfer equation and force equilibrium equation, conservation equation of pocket flux and conservation equation of pocket energy were presented and the changes of the lubricant viscosity and density with the temperature and pressure were taken into account. Consequently, the three-dimensional temperature continuity condition of hybrid bearing is imposed at the interface between the oil film and the bush. The relatively homogeneous and the maximum temperature is lower field was obtained with the heat flux results show that the temperature field when the supply pressure is higher.