静压气体径向轴承静态承载和静态刚度分析

Studyon Static Load Capacity and Stiffness of Aerostatic Journal Bearings

采用有限差分方法求解静态Reynolds方程,得到了静压气体径向轴承静态承载和静态刚度的数值计算方法。为了验证数值求解方法的正确性,搭建实验平台,实测了轴承的静态承载力和静态刚度值,并同数值仿真结果进行了对比。对比结果表明,静态承载的数值仿真数据同实测数据的最大误差为11.32%,静态刚度的数值仿真数据同实测数据的最大误差为16.73%;关于静态承载、静态刚度随偏心率的变化规律,数值仿真的结果同实测的结果具有较好的一致性。

The finite difference method is adopted to solve the static Reynolds equation and obtain the solution of static load capacity and the stiffness of the bearing.In order to validate the accuracy of the numerical simulation method,the load capacity and stiffness of the bearing are measured by experiments.The comparison shows that the error of the load capacity between simulation and experiment result is less than 11.32%,and the error of the stiffness less than 16.73%.As to the influence of the eccentricity ratio on the static load capacity and stiffness of the bearing,the simulation result is in accordance with that of the experiment result.