Analysis of Transient Elastohydrodynamic Lubrication of Asymmetric Polymer Gear Under Reversing Condition

doi:10.3901/JME.2022.11.241

Abstract

Abstract: Reversing of the gear causes the deterioration of the working condition of the gear system and is unfavorable to the maintenance of gear lubrication. In order to explore lubrication performance of asymmetric gear under reversing working conditions, transient elastohydrodynamic lubrication performance of asymmetric polymer gear reversing conditions is analyzed with multiple grid method. The elastohydrodynamic lubrication properties of the asymmetric gear and symmetric gear under the reversing working condition are compared. The elastohydrodynamic lubrication properties of asymmetric gear under the condition of forward and the reversing operation is comparatively analyzed.The effects of different forms of rotational speed change and the impact on transient elastohydrodynamic lubrication performance of asymmetric polymer gear under the working condition of reversing is analyzed. The results show that under the reversing condition, the thickness of lubricating oil film decreases greatly at the reversing point, which is the dangerous point of gear lubrication failure. Asymmetric design of gears can improve the lubrication performance during reversing operation. The sinusoidal deceleration and sinusoidal acceleration in the reversing process is more favorable to the elastohydrodynamic lubrication performance of the gear than other forms of speed variation under the reversing condition. The impact is not conducive to the lubrication of asymmetric gear under reversing condition.

Key words: asymmetric gears, elastohydrodynamic lubrication, multi-grid method, polymer gears, gear reversal

CLC Number:

TH117

ZUO Mingyu, WANG Youqiang, JIAN Guangxiao, HU Yu, MO Jun, FANG Yuxin. Analysis of Transient Elastohydrodynamic Lubrication of Asymmetric Polymer Gear Under Reversing Condition[J]. Journal of Mechanical Engineering, 2022, 58(11): 241-248.

References

[1] ZHANG Jianrong, QIAN Xinyun, QIAN Xiongwei. Finite element study on static transmission error of plastic spur gear[J]. Plastics Science and Technology, 2020, 48(10):89-92. 张建蓉, 钱心筠, 钱雄伟. 塑料直齿圆柱齿轮的静态传动误差有限元研究[J]. 塑料科技, 2020, 48(10):89-92.
[2] LU Zehua, LIU Huaiju, ZHU Caichao, et al. Effects of lubrication and loading levels to the POM gear durability performance[J]. China Mechanical Engineering, 2021, 32(17):2047-2054. 卢泽华, 刘怀举, 朱才朝, 等. 润滑和载荷状态对聚甲醛齿轮服役性能的影响[J]. 中国机械工程, 2021, 32(17):2047-2054.
[3] SONG Kaili, WANG Youqiang, HUANG Bingxi, et al. The study on EHL of plastic pinion engaging with steel gear[J]. Lubrication Engineering, 2005(1):50-51+54. 宋开利, 王优强, 黄丙习, 等. 塑料与钢制齿轮啮合的弹流润滑研究[J]. 润滑与密封, 2005(1):50-51+54.
[4] WANG Fahui. Gearing elasto-hydrodynamic lubrication based on the ideal model[D]. Nanchang:Nanchang University, 2008. 王发辉. 基于理想模型的齿轮传动弹性流体动力润滑研究[D]. 南昌:南昌大学, 2008.
[5] SEKAR P R. Performance enhancement of spur gear formed through asymmetric tooth[J]. Proceedings of the Institution of Mechanical Engineers, Part J:Journal of Engineering Tribology, 2019, 233(9):1361-1378.
[6] PANDIAN K A, GAUTAM S S, SENTHILVELAN S. Experimental and numerical investigation of the bending fatigue performance of symmetric and asymmetric polymer gears[J]. Proceedings of the Institution of Mechanical Engineers, Part L:Journal of Materials:Design and Applications, 2020, 234(6):819-834.
[7] CAO Wen. Influence of surface roughness on the mixed elastohydrodynamic lubrication performance of vehicle gears contact area[J]. Journal of Physics:Conference Series, 2020, 1629(1):012092.
[8] XIA Boqian, GAO Lei, ZHANG Shaolin, et al. Research on dynamic characteristics of line contact EHL friction pair[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(4):493-499. 夏伯乾, 高磊, 张绍林, 等. 线接触弹流摩擦副的动特性研究[J]. 机械科学与技术, 2021, 40(4):493-499.
[9] JIAN Guangxiao, WANG Youqiang, YU Xiao, et al. Elasto-hydrodynamic lubrication of gears under coupling of vibration and contact impact[J]. Journal of Vibration and Shock, 2020, 39(21):226-232. 菅光霄, 王优强, 于晓, 等. 振动与接触冲击耦合作用下的齿轮弹流润滑研究[J]. 振动与冲击, 2020, 39(21):226-232.
[10] LIN Guozhi, LIANG Liang. Effect of surface micro-texturing on adhesion-diffusion wear behavior of WC-8Co in reciprocating sliding[J]. Tribology, 2021, 41(5):657-668. 林国志, 梁良. 表面微织构对WC-8Co在往复摩擦磨损中粘结-扩散磨损特性的影响[J]. 摩擦学学报, 2021, 41(5):657-668.
[11] WANG Bingqing. Theoretical and experimental study on soft elastohydrodynamic lubrication of hydraulic linear reciprocating seals[D]. Hangzhou:Zhejiang University of Technology, 2019. 王冰清. 液压直线往复密封软弹流润滑理论与实验研究[D]. 杭州:浙江工业大学, 2019.
[12] YUAN Yupeng, LI Quancai, LIU Zhongming, et al. Analysis on lubrication state of open pinion and rack drive under low-speed and heavy-load[J]. Lubrication Engineering, 2015, 40(5):98-103. 袁玉鹏, 李权才, 刘忠明, 等. 低速重载开式齿轮齿条传动润滑状态分析[J]. 润滑与密封, 2015, 40(5):98-103.
[13] XU Caihong, WANG Youqiang, WANG Limei, et al. Lubrication analysis of gear rack transmission in reciprocating motion[J]. Surface Technology, 2017, 46(9):114-120. 徐彩红, 王优强, 王立梅, 等. 齿轮齿条传动往复运动过程的润滑分析[J]. 表面技术, 2017, 46(9):114-120.
[14] WANG Youqiang, ZHAO Jingjing, XU Caihong. Reversing time of duration and dead center position effects on the elastohydrodynamic lubrication of reciprocating spur gear rack[J]. Chinese Journal of Computational Mechanics, 2019, 36(3):389-394. 王优强, 赵晶晶, 徐彩红. 换向持续时间和换向点位置对往复运动齿轮齿条弹流润滑的影响[J]. 计算力学学报, 2019, 36(3):389-394.
[15] XIE Yinong, WANG Youqiang, SONG Xiaoping, et al. Lubrication analysis of seawater lubricated UHMWPE bearings with different acceleration and deceleration modes[J]. Lubrication Engineering, 2019, 44(9):77-82. 谢奕浓, 王优强, 宋晓萍, 等. 海水润滑UHMWPE轴承不同加减速形式润滑分析[J]. 润滑与密封, 2019, 44(9):77-82.
[16] WANG Youqiang, CHANG Tong. The influence of approach impact load on elasto-hydrodynamic lubrication of involute spur gears[J]. Chinese Journal of Computational Mechanics, 2010, 27(3):527-532. 王优强, 畅通. 啮入冲击对直齿轮弹流润滑的影响[J]. 计算力学学报, 2010, 27(3):527-532.
[17] ZHAO Jingjing, WANG Youqiang. Non-steady-state EHL analysis of impact load in involute spur gear under different carrier fluid ferrofluid[J]. Machine Tool & Hydraulics, 2019, 47(22):20-23+40. 赵晶晶, 王优强. 冲击载荷下不同载液磁流体直齿圆柱齿轮的弹流润滑数值分析[J]. 机床与液压, 2019, 47(22):20-23+40.
[18] XIE Yinong, WANG Youqiang, SONG Xiaoping, et al. Transient lubrication analysis of UHMWPE bearings during start-up with vibration and shock[J]. Journal of Vibration and Shock, 2019, 38(24):144-149. 谢奕浓, 王优强, 宋晓萍, 等. 启动振动与海浪冲击耦合时变UHMWPE轴承润滑分析[J]. 振动与冲击, 2019, 38(24):144-149.
[19] CRUZ M D L, CHONG W W F, TEODORESCU M, et al. Transient mixed thermo-elastohydrodynamic lubrication in multi-speed transmissions[J]. Tribology International, 2012, 49:17-29.
[20] JIAN Guangxiao, WANG Youqiang, ZHANG Ping, et al. Analysis of lubricating performance for involute spur gear under vibration[J]. Lubrication Science, 2020, 32(7):344-357.