Stiffness Analysis of Angular Contact Ball Bearing under Non-Uniform Preload

摘要：

　　Reasonable bearing preload can sufficiently ensure the good performance of bearing.Traditionally,rigid and constant preloads are used to apply uniform forces on the bearing.However,considering the machining errors,assembly errors and load conditions,the uniform preload actually manifests as a non-uniform load distribution in ball bearing.The work presents a method to analyze the bearing characters under the different preload conditions.Under non-uniform preload the bearing outer ring is rotated at a small angle with respect to inner ring.In this occasion,the stresses and deformations of rolling elements at different azimuth angles diverse from each other.As a result,the bearing stiffness is also different from that under uniform preload.In this paper,the bearing deformation and stiffness under different uniform and non-uniform preloads are analyzed using nonlinear finite element method.The results show that the relationship between axial stiffness and axial preload are nonlinear.The bearing angular stiffness increases nonlinearly with the equivalent moment under non-uniform preload.

关键词： Ball bearing Non-uniform preload Stiffness

作者: Zhao Hong Wu Wenwu Li Xiaohu Li Huanfeng

作者单位: School of Mechanical Engineering Xian Jiaotong University Xian 710049, China

会议类型: 国际会议

会议名称: 2013 International Symposium on Assembly and Manufacturing(2013装配与制造国际专题会议)

会议地点: 西安

会议语种:英文

页码: 97-101

在线出版日期: 2013-07-01（万方平台首次上网日期，不代表论文的发表时间）