摘要
为定量预测与规避双半内圈角接触球轴承三点接触现象,降低轴承异常磨损风险,采用牛顿-欧拉矢量力学方法,结合该轴承结构与受载特点,对双半内圈角接触球轴承内部元件相对位置与速度关系进行了描述,综合考虑轴承各元件相互作用力、运动惯性力、陀螺力矩以及润滑油对轴承元件施加的流体拖动力与挤压力,建立了考虑三点接触情况的双半内圈角接触球轴承拟动态性能分析模型,并完成轴承非线性方程组求解算法优化,且通过与国外成熟软件计算结果和保持架转速试验结果对比,验证了所建立模型的准确性,研究表明,所建立的双半内圈角接触球轴承分析方法对内部接触角分布和应力分布的预测误差小于12%,对于最大接触应力的预测误差小于2%,且对接触痕迹的预测较为准确,对于保持架实际转速的预测误差小于10%,可用于双半内圈角接触球轴承设计优化。
In order to predict the three-point contact phenomenon and reduce the risk of abnormal wear,with the help of Newton-Euler vectorial mechanics,combining with the force and structure features,relative location and velocity relationship of internal element of the arched inner race ball bearing were described,the force of bearing parts,inertia force,gyroscopic torque,fluid drag force and extrusion force were considered in process of the arched inner race ball bearing quasi-dynamic modeling considering the three-point contact condition,the optimization of algorithm for solving nonlinear equations of the model was completed,and the accuracy of the model was validated by comparing with foreign mature software and test of the cage rotational speed.The results indicated that the proposed model had a maximum error of 12% for contact angle and contact stress distribution,and a maximum error of 2% for maximum contact stress,and also had high precision for the contact traces prediction,at the same time,the model had a maximum error of 10% for the cage rotational speed by the test validation,so that the model can be used for improving optimization design of the arched inner race ball bearing.
作者
唐瑞
高利霞
余丹
李炎军
李贵林
TANG Rui;GAO Lixia;YU Dan;LI Yanjun;LI Guilin(Sichuan Gas Turbine Establishment,Aero Engine Corporation of China,Chengdu 610500,China)
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2024年第8期483-495,共13页
Journal of Aerospace Power
关键词
双半内圈角接触球轴承
三点接触特性
接触应力
接触痕迹
保持架转速试验
arched inner race ball bearing
three-point contact property
contact stress
contact traces
cage rotational speed test
