轴向缝切向进气径向气体轴承的稳定性研究

Study on the Whirl Instability of the Externally Pressurized Gas Bearing

本文利用小扰动法分析了轴向缝切向进气径向气体轴承的稳定性问题.在理论分析中考虑了气流的惯性项对该类轴承稳定的影响,得出了轴承的设计参数与轴承失稳转速及失稳涡动比的关系曲线.实验结果与计算结果吻合较好.

This paper describes an analysis of whirl instability of externally pressurized gas bearing with axial slots of tangential supply. The influence of the inertia force of the gas film on the dynamic properties of this kind of bearing is considered, and the whirl onset speed is calculated under some simplicities. The curves of design parameters versus the whirl onset speed and whirl ratio are obtained. The calculated results are compared with experimental results, and good correspondence is revealed between them.