西南交通大学学报2026，Vol.61Issue(1)：207-221,15.DOI:10.3969/j.issn.0258-2724.20240065
TBT组合式球轴承组内载荷分布及动刚度特性对比分析
Comparative Analysis of Load Distribution and Dynamic Stiffness Characteristics of Back-to-Back Combined Ball Bearings
摘要
Abstract
The dynamic load distribution and stiffness characteristics of bearings are important factors that cause vibration and cutting stability of machine tools.On the basis of nonlinear elastic Hertz contact theory and Jones-Harris model,combined with the judgment criterion of roller-raceway contact state,a five-degree-of-freedom analysis model of multi-row combined ball bearings was proposed to compare dynamic load distribution and dynamic stiffness characteristics of left and right rows in tandem back-to-back(TBT)combined ball bearings under different operating conditions.The improved iterative algorithm was adopted for solution,which greatly improved the convergence of the iterative calculation under the fluctuation of different external conditions and yielded the dynamic load distribution and dynamic stiffness characteristics within the TBT combined bearings under constant preload.The results show that the rotational speed,radial load,and axial load can change the load distribution and dynamic stiffness characteristics of combined bearings,and have different effects on the left-row and right-row bearings.The increase in rotational speed can lead to the incomplete contact area within the bearings,which makes the load distribution of the bearing oscillate.Compared with that of a single bearing under equivalent external load conditions,the radial dynamic stiffness of the combined bearing is more significantly improved than the axial dynamic stiffness.关键词
球轴承/接触状态分析/动态载荷分布/动刚度/接触角Key words
ball bearing/contact state analysis/dynamic load distribution/dynamic stiffness/contact angle分类
机械制造引用本文复制引用
孙凤,胡玉卓,刘祥,赵川,杨文华,李博,徐方超,赵海宁..TBT组合式球轴承组内载荷分布及动刚度特性对比分析[J].西南交通大学学报,2026,61(1):207-221,15.基金项目
博士后科学基金面上项目(2022M722223) （2022M722223）
国家自然科学基金项目(52375258,52005345,52005344) （52375258,52005345,52005344）
国家重点研发计划(2020YFC2006701) （2020YFC2006701）
辽宁省教育厅项目(LJKMZ20220506,LJKMZ20220460,JYTMS20231191) （LJKMZ20220506,LJKMZ20220460,JYTMS20231191）
辽宁省"揭榜挂帅"科技重大专项(2022JH1/10400027) （2022JH1/10400027）
辽宁省"揭榜挂帅"科技重点专项(2022JH1/10800081) （2022JH1/10800081）
