椭圆滑动轴承在许多大型和关键设备中被广泛应用。常见的椭圆滑动轴承都是针对某种特定工况设计的，在实际运行过程中，转速和载荷等工况参数的变化会影响轴承支撑的转子系统的动力学特性。仅研究稳定工况下的动力学特性不能满足实际工况要求。为适应时变工况，维持转子轴承系统在不同工作状态下的稳定性，提出一种参数可调椭圆轴承。通过调节轴承油膜间隙，研究椭圆度对轴承油膜刚度和阻尼的影响，然后在不同椭圆度下对转子轴承系统进行动力学分析。最后搭建转子轴承试验台，通过试验验证调节椭圆轴承的油膜间隙可有效地抑制转子的振动。
Elliptical bearings are widely used in many large and critical equipments. Elliptical bearings are usually designed based on certain conditions. However, in the actual operation processes, the speed and load parameter changes affect the dynamic characteristics of rotor bearing support system. The dynamic characteristics under the steady conditions do not meet the actual working conditions. In order to adapt to the time-varying conditions and maintain the stability of the rotor bearing system under different working conditions, an elliptical bearing with adjustable parameters is proposed in this study. By adjusting the oil film gap of the bearing, the influences of ellipticity on the stiffness and damping of the bearing oil film is studied. Then the dynamic analysis for the rotor bearing systems with different ellipticity values is carried out. Finally, a test rig for rotor bearing is set up to verify that the rotor vibration can be effectively suppressed by adjusting the oil film gap of the elliptical bearing.
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