考虑热弹性变形和表面粗糙度的圆柱滚子轴承热弹流润滑分析

doi:10.3901/JME.2018.13.159

机械工程学报 ›› 2018, Vol. 54 ›› Issue (13): 159-169.doi: 10.3901/JME.2018.13.159

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考虑热弹性变形和表面粗糙度的圆柱滚子轴承热弹流润滑分析

路遵友^1,2, 吕延军^1,2, 李莎^1,2, 张伟^1,2, 党超^1,2, 余娜^1,2, 杨婕^1,2

1. 西安理工大学机械与精密仪器工程学院西安 710048;
2. 西安交通大学机械结构强度与振动国家重点实验室西安 710049

收稿日期:2017-07-22 修回日期:2017-12-10 出版日期:2018-07-05 发布日期:2018-07-05
通讯作者: 吕延军(通信作者),男,1972年出生,博士,教授,博士研究生导师。主要研究方向为非线性动力学与控制、先进润滑理论与新型轴承技术。E-mail:yanjunlu@xaut.edu.cn
作者简介:路遵友,男,1980年出生,博士研究生。主要研究方向为先进润滑理论与新型轴承技术、非线性动力学与控制。E-mail:sdlivclzy@126.com
基金资助:
国家自然科学基金（51375380）、机械结构强度与振动国家重点实验室开放课题（SV2016-KF-10）、陕西省自然科学基金（2014JM2-5082）和陕西省教育厅科学研究计划（15JS068）资助项目。

Thermal Elastohydrodynamic Lubrication Analysis of Cylindrical Roller Bearing Considering Thermal Elastic Deformation and Surface Roughness

LU Zunyou^1,2, LÜ Yanjun^1,2, LI Sha^1,2, ZHANG Wei^1,2, DANG Chao^1,2, YU Na^1,2, YANG Jie^1,2

1. School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048;
2. State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049

Received:2017-07-22 Revised:2017-12-10 Online:2018-07-05 Published:2018-07-05

摘要/Abstract

摘要： 运用线接触热弹性流体动压润滑理论，考虑了润滑油膜温升变化引起的圆柱滚子轴承中滚子和内圈接触表面的径向热弹性变形和表面粗糙度的影响，提出了一种计入热弹性变形和粗糙度影响的圆柱滚子轴承线接触热弹性流体动压润滑分析方法。该方法通过将热弹性变形进行热力转换，得到了滚子和内圈接触表面的材料线热膨胀系数，计算修正了滚子和轴承内圈因油膜温度场变化引起的径向热弹性变形，求得了计入热弹性变形和表面粗糙度后的油膜压力、油膜厚度、油膜温升以及径向热弹性变形量等主要润滑特性，研究了载荷、卷吸速度和滑滚比的变化对最小油膜厚度、最大油膜压力和最大油膜温升的影响规律，结果表明，热弹性变形量与最小油膜厚度处在同一量级，热弹性变形和粗糙度会对润滑特性产生明显的影响。

关键词: 表面粗糙度, 热弹流, 热弹性变形, 圆柱滚子轴承

Abstract: By considering the radial thermal elastic deformation and surface roughness of contact surface between roller and inner race of cylindrical roller bearing caused by lubricant temperature rise, a numerical method for analyzing line contact thermal elastohydrodynamic lubrication of cylindrical roller bearing is proposed based on the line contact thermal elastohydrodynamic lubrication theory. According to heat transfer of thermal elastic deformation, the material line thermal expansion coefficients of contact surface between roller and inner race are obtained, the radial thermal elastic deformation caused by lubricant temperature rise is modified. The oil film pressure, the oil film thickness, the oil film temperature rise and the radial thermal deformation are calculated by considering radial thermal elastic deformation and surface roughness. The effects of different loads, entrainment speeds and slide-to-roll ratios on the minimum oil film thickness, the maximum oil film pressure and the maximum lubricant temperature rise are studied. The results show that thermal elastic deformation and minimum oil film thickness are in the same order of magnitude, thermal elastic deformation and surface roughness have profound influences on lubrication performance.

Key words: cylindrical roller bearing, surface roughness, thermal elastic deformation, thermal elastohydrodynamic lubrication

中图分类号:

TH133

路遵友, 吕延军, 李莎, 张伟, 党超, 余娜, 杨婕. 考虑热弹性变形和表面粗糙度的圆柱滚子轴承热弹流润滑分析[J]. 机械工程学报, 2018, 54(13): 159-169.

LU Zunyou, LÜ Yanjun, LI Sha, ZHANG Wei, DANG Chao, YU Na, YANG Jie. Thermal Elastohydrodynamic Lubrication Analysis of Cylindrical Roller Bearing Considering Thermal Elastic Deformation and Surface Roughness[J]. Journal of Mechanical Engineering, 2018, 54(13): 159-169.

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考虑热弹性变形和表面粗糙度的圆柱滚子轴承热弹流润滑分析

Thermal Elastohydrodynamic Lubrication Analysis of Cylindrical Roller Bearing Considering Thermal Elastic Deformation and Surface Roughness

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