混合陶瓷球轴承振动特性仿真分析

为研究混合陶瓷角接触球轴承剥落故障振动特性，在ANSYS Workbench中建立了角接触球轴承的动力学有限元模型，通过在外圈滚道、内圈滚道及滚动体上设置剥落故障，分析特定工况下正常与剥落故障时轴承各零件受力变化。在此基础上，研究正常与不同零件故障对接触力的影响，并分析剥落故障对轴承零件运动特性的影响。结果表明：轴承各元件中应力最大的是滚动体，剥落故障使轴承最大应力增加，且最大应力大都出现在滚动体上；外圈剥落对经过剥落处的滚动体造成冲击，增大滚动体公转和自转周期，使滚动体速度降低，接触力明显增大；外圈剥落对内圈振动加速度的变化影响较小。

Simulation Analysis of Vibration Characteristics of Hybrid Ceramic Ball Bearings

In order to study the vibration characteristics of the spalling fault of the hybrid ceramic angular contact ball bearing,the dynamic finite element model of the angular contact ball bearing was established in ANSYS Workbench.By setting the spalling fault on the outer ring way,inner ring way and rolling lement,the force changes of each part of the bearing during normal and spalling fault under specific working conditions were analyzed.On this basis,the influence of normal and different parts faults on the contact force was studied,and the influence of spalling faults on the kinematic characteristics of bearing parts was analyzed.The results show that the largest stress in each element of the bearing is the rolling element,and the maximum stress of the bearing is increased with the spalling fault,and most of the maximum stress occurs on the rolling element;the rolling element passing through the spalling place is impacted by the peeling of the outer ring,by increasing the rolling revolution and rotation periods of the rolling elements,the speed of the rolling elements reduces and the contact force increases significantly;the peeling of the outer ring has little effect on the change of the vibration acceleration of the inner ring.