Study on Influences of Load on Oil Film Interface Slip and Elastohydrodynamic Lubrication Characteristics

doi:10.3969/j.issn.1004-132X.2024.09.006

Abstract

Abstract: In order to explore formation and evolution mechanism of lubrication failure of friction pair in mechanical transmission system under harsh working conditions, a point contact elastohydrodynamic lubrication model was established considering oil film interface slip, and simulation calculation was carried out. The two-color light interference elastohydrodynamic lubrication test was carried out to study the influences of load on oil film interface slip in elastohydrodynamic lubrication, and then variation characteristics of entrainment velocity, hydrodynamic pressure, oil film thickness and slip parameters with load were studied under interface slip state. The results show that with the increase of load, the slip amplitude and slip range of interface increase significantly and the entrainment velocity in slip region decreases obviously. The dynamic pressure distribution in slip region tends to be uniform. In addition, slip region produces film thickness accumulation and inlet depression characteristics. The shape of slip region gradually presents the characteristics of “half crescent”.

Key words: interface slip, point contact, elastohydrodynamic lubrication, ultimate shear force, slip length

摘要： 为探究恶劣工况下机械传动系统中摩擦副润滑失效的形成和演变机理，建立考虑油膜界面滑移的点接触弹流润滑模型，进行仿真计算，并开展双色光干涉弹流润滑试验，研究载荷对弹流润滑中油膜界面滑移的影响，进而研究界面滑移状态下卷吸速度、流体动压、油膜厚度、滑移参数等随载荷的变化特性。研究结果表明：随着载荷的增大，界面滑移幅度和滑移范围均显著增大，滑移区域卷吸速度明显下降,滑移区域动压分布趋于均匀，滑移区域产生膜厚堆积并出现入口凹陷特征，滑移区域形状逐渐呈“半月牙形”特征。

关键词: 界面滑移, 点接触, 弹流润滑, 极限剪切力, 滑移长度

CLC Number:

U463.2

GUO Chuang, ZHAO Erhui, QUAN Long, WANG Chengwen. Study on Influences of Load on Oil Film Interface Slip and Elastohydrodynamic Lubrication Characteristics[J]. China Mechanical Engineering, 2024, 35(09): 1567-1574.

郭闯, 赵二辉, 权龙, 汪成文. 载荷对油膜界面滑移及弹流润滑特性的影响研究[J]. 中国机械工程, 2024, 35(09): 1567-1574.

References

［1］SMITH F W. Lubricant Behaviour in Concentrated Contact Systems—the Castor Oil-steel System［J］. Wear, 1959, 2:250-263.
［2］SMITH F W. The Effect of Temperature in Concentrated Contact Lubrication［J］. ASLE Transactions, 1962, 5(1):142-148.
［3］JOHNSON K L, CAMERON R. Fourth Paper:Shear Behaviour of Elastohydrodynamic Oil Films at High Rolling Contact Pressures［J］. Proceedings of the Institution of Mechanical Engineers, 1967, 182(1):307-330.
［4］HOUPERT L, FLAMAND L, BERTHE D. Rheological and Thermal Effects in Lubricated E.H.D. Contacts［J］. Journal of Lubrication Technology, 1981, 103(4):526-532.
［5］BAIR S, WINER W O. A Rheological Model for Elastohydrodynamic Contacts Based on Primary Laboratory Data［J］. Journal of Lubrication Technology, 1979, 101(3):258-264.
［6］张朝辉, 温诗铸, 雒建斌. 考虑边界滑移的润滑方程（Ⅰ）—理论推导［C］∥第七届全国摩擦学大会. 兰州, 2002:393-395.
ZHANG Zhaohui, WEN Shizhu, LUO Jianbin. Lubrication Equation Considering Boundary Slip—Theoretical Derivation［C］∥Proceedings of the 7th National Tribology Congress. Lanzhou, 2002:393-395.
［7］张朝辉, 雒建斌, 温诗铸. 考虑边界滑移的润滑方程（Ⅱ）—计算结果［C］∥第七届全国摩擦学大会. 兰州, 2002:396-398.
ZHANG Zhaohui, LUO Jianbin,WEN Shizhu. Lubrication Equation Considering Boundary Slip—Computation Result［C］∥Proceedings of the 7th National Tribology Congress. Lanzhou, 2002:396-398.
［8］ZHANG Yongbin, WEN Shizhu. An Analysis of Elastohydrodynamic Lubrication with Limiting Shear Stress:Part I—Theory and Solutions［J］. Tribology Transactions, 2002, 45(2):135-144.
［9］STHL J, JACOBSON B O. A Lubricant Model Considering Wall-slip in EHL Line Contacts［J］. Journal of Tribology, 2003, 125(3):523-532.
［10］刘奕壕, 黄柏林, 付忠学, 等. 基于Circular模型的大剪应变率点接触弹流界面滑移数值分析［J］. 摩擦学学报, 2018, 38(2):129-137.
LIU Yihao, WONG Patlam, FU Zhongxue, et al. Numerical Analysis of EHL Boundary Slip Effect Applying Circular Model under Big Shear Strain Rate［J］. Tribology, 2018, 38(2):129-137.
［11］周亚博, 王优强, 魏聪, 等. 表面改性对滑动轴承弹流润滑的影响［J］. 机械传动, 2019, 43(5):27-31.
ZHOU Yabo, WANG Youqiang, WEI Cong, et al. Influence of Interfacial Modification on EHL of Journal Bearing［J］. Journal of Mechanical Transmission, 2019, 43(5):27-31.
［12］ZHANG Yaoguang, WANG Wenzhong, LIANG He, et al. Slip Status in Lubricated Point-contact Based on Layered Oil Slip Lubrication Model［J］. Tribology International, 2020, 144:106104.
［13］张镜洋, 陈哲, 吕元伟, 等. 动压轴承流固界面非一致滑移流动分析方法及分布特征［J］. 航空学报, 2023, 44(11):127639.
ZHANG Jingyang, CHEN Zhe, LYU Yuanwei, et al. Analysis Method and Distribution Characteristics of Non-uniform Slip Flow at Fluid-solid Interface of Gas Foil Bearing［J］. Acta Aeronautica et Astronautica Sinica, 2023, 44(11):127639.
［14］周羿好, 沈景凤, 陈雨飞. 基于小孔节流的液体动静压球轴承界面滑移下的承载性能分析［J］. 机械强度, 2022, 44(3):641-648.
ZHOU Yihao, SHEN Jingfeng, CHEN Yufei. Analysis of Bearing Performance of Hydrodynamic and Hydrostatic Ball Bearings under Interface Slip Based on Orifice Throttling［J］. Journal of Mechanical Strength, 2022, 44(3):641-648.
［15］KANETA M, NISHIKAWA H, KANADA T, et al. Abnormal Phenomena Appearing in EHL Contacts［J］. Journal of Tribology, 1996, 118(4):886-892.
［16］EHRET P, DOWSON D, TAYLOR C M. On Lubricant Transport Conditions in Elastohydrodynamic Conjuctions［J］. Proceedings of the Royal Society of London Series A:Mathematical, Physical and Engineering Sciences, 1998, 454(1971):763-787.
［17］YANG P R, QU S, KANETA M, et al. Formation of Steady Dimples in Point TEHL Contacts［J］. Journal of Tribology, 2001, 123(1):42-49.
［18］郭峰, 刘晓玲, 杨沛然, 等. 弹性流体动力润滑中的粘度楔理论［J］. 青岛建筑工程学院学报, 2004, 25(4):75-80.
GUO Feng, LIU Xiaoling, YANG Peiran, et al. Viscosity Wedge in Elastohydrodynamic Lubrication［J］. Journal of Qingdao Institute of Architecture and Engineering, 2004, 25(4):75-80.
［19］GUO F, WONG P L. An Anomalous Elastohydrodynamic Lubrication Film:Inlet Dimple［J］. Journal of Tribology, 2005, 127(2):425-434.
［20］GUO F, WONG P L, GENG M, et al. Occurrence of Wall Slip in Elastohydrodynamic Lubrication Contacts［J］. Tribology Letters, 2009, 34(2):103-111.
［21］GUO F, LI X M, WONG P L. A Novel Approach to Measure Slip-length of Thin Lubricant Films under High Pressures［J］. Tribology International, 2012, 46(1):22-29.
［22］LI X M, GUO F, WONG P L. Study of Boundary Slippage Using Movement of a Post-impact EHL Dimple under Conditions of Pure Sliding and Zero Entrainment Velocity［J］. Tribology Letters, 2011, 44(2):159.
［23］PONJAVIC A, WONG J S S. The Effect of Boundary Slip on Elastohydrodynamic Lubrication［J］. RSC Advances, 2014, 4(40):20821-20829.
［24］付忠学, 郭峰, 黄柏林. 表面特性对纯滑弹流油膜形状和摩擦力的影响的试验研究［J］. 摩擦学学报, 2013, 33(2):112-117.
FU Zhongxue, GUO Feng, WONG Patlam. Experimental Investigation of Effect of Surface Property on Film Shape and Friction in EHL［J］. Tribology, 2013, 33(2):112-117.
［25］潘伶, 林国斌, 韩雨晴, 等. 分子动力学模拟纳米颗粒添加剂对边界润滑的影响［J］. 中国机械工程, 2023, 34(10):1140-1150.
PAN Ling, LIN Guobin, HAN Yuqing, et al. Molecular Dynamics Simulation for Effect of Nanoparticle Additives on Boundary Lubrication［J］. China Mechanical Engineering, 2023, 34(10):1140-1150.

[1]	MA Qiaoying, YANG Shaopu, LIU Yongqiang, . Vibration and Lubrication Characteristics of Railway Vehicle Axle Box Bearings under Wheel-rail Excitation [J]. China Mechanical Engineering, 2024, 35(04): 580-590.
[2]	WANG Yatao, QIU Ming, ZHANG Jiaming, WANG Huijie. Cause Analysis on Multi-point Contact between Steel Ball and Raceway of Four-point Contact Ball Bearings [J]. China Mechanical Engineering, 2023, 34(23): 2794-2804.
[3]	WEI Bingyang, GU Dewan, WANG Yongqiang, YANG Jianjun, . Friction Power Loss Analysis and Efficiency Test of High Reduction Hypoid Gears [J]. China Mechanical Engineering, 2023, 34(13): 1525-1532.
[4]	CHEN Yue, QIU Ming, DU Hui, YANG Xu. Factors Influencing Rotation Accuracy of Four-point Contact Ball Bearings for Robots [J]. China Mechanical Engineering, 2020, 31(14): 1678-1685,1692.
[5]	SHEN Jinlong1;XUE Zhengtang2;HENG Chuanfu2;LIU Xiaojun1. Elastic Deformations of Surface under EHL Point Contact [J]. China Mechanical Engineering, 2019, 30(14): 1696-1702,1712.
[6]	ZHANG Yue;AN Zijun;YANG Ronggang;JIANG Wei;LIU Ziqiang. Mechanics Properties of Cross-groove Equi-speed Output Mechanisms for Cycloid Ball Planetary Transmissions [J]. China Mechanical Engineering, 2019, 30(14): 1665-1672.
[7]	CHU Hongyan;CHEN Libo;AN Ran;CAI Ligang. Analysis of Ink Temperature of Ink Roller Extrusion Contact Areas Based on Thermal Elastohydrodynamic Lubrication [J]. China Mechanical Engineering, 2018, 29(23): 2773-2778.
[8]	Xiong Wanli, Zhao Zisheng, Zhou Yang, Lü Lang, Hou Zhiquan. Research on Dynamic Stiffness of Ball Bearings Considering Ferrule Deformation and Elastohydrodynamic Lubrication [J]. China Mechanical Engineering, 2015, 26(11): 1421-1428.
[9]	SUN Gao-Xiang-1, HUA Tong-Shu-2, CHEN Xiao-Yang-3. Study on EHL Performance for a Misaligned Logarithmic Profile Roller [J]. China Mechanical Engineering, 2013, 24(5): 650-653.
[10]	ZHANG Li-Jing, WANG You-Jiang. Thermal Micro-elastohydrodynamic Lubrication Analysis of Seawater-lubricated Plastic Bearing [J]. China Mechanical Engineering, 2013, 24(1): 90-94.
[11]	SUN Gao-Xiang-1, GUAN Dian-Zhu-1, HUA Tong-Shu-2. #br# Study on Influence of Crowning Parameters on EHL Performance of Cylindrical Rollers [J]. China Mechanical Engineering, 2012, 23(16): 1982-1984,1990.
[12]	LIU Jian-Beng-1, 2, ZHANG Xin-Xi-1, GU Qiang-Han-2, XU Chun-Zhan-2. Effects of Rheological Model on Elastohydrodynamic Film Thickness for Shear-thinning Lubricants [J]. China Mechanical Engineering, 2011, 22(20): 2415-2418.
[13]	WANG Shi-Long, FENG Chi-Heng, LEI Song, XIAO Gong. Effect of Time-varying Friction Coefficient on Dynamics of Spiral Bevel Gears [J]. China Mechanical Engineering, 2011, 22(2): 148-152.
[14]	Wang Xin,;Zhang Xiangjun;Meng Yonggang;Wen Shizhu. Experimental Research on Boundary Slip of Confined Liquids at  Micro/nano Scale and Effect of Shear Rate [J]. J4, 2009, 20(17): 0-2021.
[15]	Liu Kun;Bing Leigang;Liu Xiaojun;Wang Wei. Experimental Study on EHL Friction under Big Slide-roll Ratio Conditions [J]. J4, 2008, 19(21): 0-2524.