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针对静压轴承油膜温升问题,在原有的矩形油腔基础上提出了梯形油腔结构.建立两种油腔流体模型,并利用ANSYS Fluent软件,在相同的转速、相同的油膜厚度及相同的油腔承载面积下,探索分析了两种油腔油膜的温度场,并总结两种腔形油膜的温度分布规律.分析结果表明:相同面积下,梯形油腔流体油膜的温升明显低于矩形油腔流体油膜的温升.即证明将矩形油腔改进为梯形油腔有利于静压轴承的降温,为轴承结构优化提供了依据.“,”Aiming at the problem of oil film temperature rise of hydrostatic bearing,a trapezoidal oil chamber structure is proposed based on the original rectangular oil chamber. Two mathematical models of oil cavity fluid are established. Using ANSYS Fluent software, the temperature fields of the two oil films were explored and analyzed under the same rotational speed,the same oil film thickness and the same bearing area. And summarized the temperature distribution of two kinds of cavity oil film. Result show that the temperature of the oil film of the trapezoidal oil chamber is significantly lower than that of the rectangular oil chamber under the same conditions. It is proved that the improvement of the rectangular oil chamber to the trapezoidal oil chamber is beneficial to the cooling of the hydrostatic bearing,which provides the basis for the structural optimization of the bearing.