圆柱滚子轴承滚子打滑机理研究.pdf

SSN1000-3762轴承2014年3期
CN41-1148/TH Dearing 2014, No. 3
产品设计与应用
圆柱滚子轴承滚子打滑机理硏究
刘红彬,张帅,那国玺,张磊,薛玉君
(河南科技大学机电工程学院,河南洛阳471003)
摘要:为研究圆柱滚子轴承在不同工况下的滚子打滑机理,基于 ABAQUS./ Explicit建立滚子与滚道柔性接触的
有限元分析计算模型,以昂式算法为基础对轴承进行全柔性多体动力学计算分析。通过提取轴承动力学计算
结果中滚子叶心节点速度变化历程,获得滚子相对滚道理想纯滚动的打滑率,研究内圈转速、径向载荷和过盈
配合产生的压力等因素对滚子打滑率的影响规律。结果表明:内圈转速和径向载荷对滚子打滑率影响显著;随
着柃向载荷的增加和内湖转速的减小,可一定禔度消除滚子打滑;在相同内圈转速和向载荷下,增加内圈与
轴的过盈配合产生的压力可降低滚子打滑率。
关键词:圆柱滚子轴承:滚子;打滑率;有限元分析;显式动力学
中图分类号:TH133.332
文献标志码:B
文章编号:1000-3762(2014)03-0001-06
Study on Skidding Mechanism for Rollers of Cylindrical
Roller Bearings
Liu Hong-bin, Zhang Shuai, Xing Guo-xi, Zhang Lei, Xue Yu-jun
( School of Mechatronics Engineering, Henan University of cience and Technology, Luoyang 471003, China)
Abstract In order to study the skidding mechanism for rollers of cylindrical roller bearings under different working con-
ditions, the finite element model for flexible contact between roller and raceway is built based on ABAQUS/Explicit
nen the flexible multi -body dynamics calculation is analyzed based on the explicit algorithm. The skidding rate of
rollers is obtained by extracting the speed change process of center nodes of rollers from the caleulation result of bearing
dynamics, relative to pure olling of ler along the raceway. The influence of rotational speed of inner ring, radial load
and pressure of interference fit on skidding rate of rollers is studied. The results show that rotational speed of inner ring
and radial load have a great influence on skidding rale of rollers. The skidding of rollers can be eliminated to an extent
with the increase of radial load and decrease of rotational speed of inner ring. The increasing pressure f interterence fit
between inner ring and shaft is effective way to reduce the skidding rate for rollers under the same rotational speed of in-
ner ring and radial load
Key words: cylindrical roller bearing; roller; skidding rate; finite element analysis; explicit dynamics
轴祇在转动过程屮,由于内圈转速和载荷等承进行打滑失效分析显得尤为重要。
多种因素影响,滚动体会出现不同程度的打滑现
多年来,国内、外许多学者通过对轴承进行拟
象。打滑发生后轴承内部摩擦和发热加剧,打滑动力学和有限元动力学仿真研究来揭示滚动体打
率过大会导致轴承迅速烧伤损坏。因此,对轴滑机理。随着计算机水平的高速发展,有限元成
为解决轴承静力学和动力学问题的有效方法,从
收稿日期:2013-07-31;修回日期:2013-09-18
基金项目:清华大学摩擦学国家重点实验室开放基金项目滚动体载荷分布到滚动体与滚道的摩擦学特性研
SKI1KFH3AS)河南科技大学自然科学坡创新能力培究都为滚动体打滑机理研究奠定了理论基础。文
育基金项月(2013ZCX(OT
献[2]运用有限元方法对滚子进行静力学分析,获
作者简介:刘红彬(1974-),男.副教授,丰要研究方向为得滚子与滚道的接触应力分布规律。文献[3]采
a163.60m:张帅(198-),男,研究生,主要研究方向为轴用拟动力学法分析高速球轴承载荷分布的数学模
承动力学仿真,E-mail:kuai1959@163.eom
型。文献[4]采用 Newton- Raphson法分析圆柱