摘要
为充分研究大型双排四点接触球轴承的载荷分布,采用超单元法模拟滚珠滚道接触,用等效梁法模拟螺栓,得到大型双排四点接触球轴承有限元简化模型,并通过与理论模型及经验公式结果对比,验证了该模型的正确性。在此基础上,利用此模型分析螺栓预紧力、安装表面平面度及变桨同步度对轴承载荷分布的影响。结果表明:随着均布螺栓预紧力的增加,轴承最大接触载荷先降低后小幅增加;非均布螺栓预紧力使轴承接触载荷波动加剧;平面度误差会造成轴承接触载荷分布不规则突变;当变桨同步度为负时,轴承的接触载荷增大。
In order to research the load distribution of a large-size-double row four-point-contact ball bearing, first, the supper element method is used to model the contact between raceways and rolling elements, and the equivalent beam method is used to model the bolt. Then, a simplified finite element model for a large-size double row four-point-contact ball bearing is obtained and its correctness is verified through the results comparison of theoretic algorithm and empirical formula. Finally, the influence of the bolt pretension, the mounting surface flatness and the differences between pitch angles on the load distribution of the bearing is analyzed by the model. The results show that with the increase of the even bolt pretension, the maximum contact load of bearing increases firstly and then slightly decreases. The uneven bolt pretension causes the exacerbated fluctuations of the bearing contact load. The surface flatness errors cause sudden changes of the contact loading distribution. When the degree of pitch-control synchronization is negative, the contact load of bearing increases.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第2期29-36,共8页
Journal of Chongqing University
基金
中央高校基本科研业务项目资助(106112015CDJXY110006)~~
关键词
有限元分析
变桨轴承
螺栓预紧力
载荷分布
finite element analysis
pitch bearing
bolt pretension
load distribution
