中文摘要：

针对工作环境、温度变化较大的机械装备中滚子副温度与供油温度的差异,提出处理滚子副温度与供油温度不同时热弹流润滑问题的方法。压力的求解采用多重网格法,膜厚的求解采用多重网格积分法,温度的求解采用逐列扫描技术,给出有限长线接触热弹流润滑问题的完全数值解。研究滚子副温度与供油温度相同和不同时滚子副的润滑特性,讨论滚子副温度、滑滚比和速度参数对齿轮、滚动轴承等机械零件润滑性能的影响。结合滚子副温度高于或低于供油温度的实例,与常规润滑（滚子副温度与供油温度相同）结果进行比较。结果表明,润滑膜厚度取决于滚子副温度而非供油温度。滑滚比对油膜压力与厚度影响不大,但对油膜温度影响显著。与低速相比,高速条件下滚子副温度对中心油膜温度的影响较弱,而对油膜厚度的影响较大。

英文摘要：

For the difference between the roller pairs temperature and the supplied oil temperature in the machinery and equipment under the changeable working environment and temperature,a method to solve a thermal elastohydrodynamic lubrication problem when the temperature of the roller pairs is not the same as that of the supplied oil is provided.The pressure is solved with the multi-grid method,the film thickness is calculated with a multilevel multi-integration method,and the temperature is solved with a sequential column sweeping technique.A full numerical solution for the thermal elastohydrodynamic lubrication in finite line contacts is obtained.Assumed that the roller pair＇s temperature is or not the same as the temperature of the supplied lubricating oil,lubrication behavior in roller pairs is investigated.The effects of the roller pair＇s temperature,the slide-roll ratio,and the velocity parameter on the lubrication performance of machine components such as gears and roll bearings are discussed.The results of the roller pairs temperature being higher or lower than the temperature of the supplied oil are compared with that of the conventional lubricating solution,where the temperature of the roller pairs and the supplied oil temperature are assumed to be the same.Results show that,the film thickness is determined by the roller pair＇s temperature,rather than the supplied oil temperature.The slide-roll ratio has little influence on the pressure and film thickness,but plays a dominant role in the film temperature.Compared with the low velocity,if the entrainment velocity is high enough,the influence of the roller pair＇s temperature on the central oil temperature is weak;however,the influence on the film thickness is strong.