周期性载荷下润滑剂回填效应试验观察

doi:10.3901/JME.2024.03.203

机械工程学报 ›› 2024, Vol. 60 ›› Issue (3): 203-213.doi: 10.3901/JME.2024.03.203

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周期性载荷下润滑剂回填效应试验观察

金旭阳, 栗心明, 刘耀, 杨萍, 郭峰, 高军斌

青岛理工大学机械与汽车工程学院青岛 266520

收稿日期:2023-03-05 修回日期:2023-11-07 出版日期:2024-02-05 发布日期:2024-04-28
通讯作者: 栗心明,男,1979年出生,博士,教授,博士研究生导师。主要研究方向为弹流润滑实验与理论、滚动轴承微量润滑与脂润滑应用基础和摩擦学测量仪器开发。E-mail:mexinmingli@163.com
作者简介:金旭阳,男, 1994 年出生,博士研究生。主要研究方向为弹流润滑实验与脂润滑应用基础。E-mail:xuyangjin@163.com
基金资助:
山东省自然科学基金(ZR2019MEEZ044)和国家自然科学基金(51875299)资助项目。

Observation of Lubricant Replenishment under Cyclic Loading

JIN Xuyang, LI Xinming, LIU Yao, YANG Ping, GUO Feng, GAO Junbin

School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520

Received:2023-03-05 Revised:2023-11-07 Online:2024-02-05 Published:2024-04-28

摘要/Abstract

摘要： 采用球-盘单点接触光干涉润滑油膜测量仪,试验观察了周期性载荷变化对润滑剂回填及润滑状态的影响。结果表明,当加载/卸载过程滚动体的运行距离大于滚道周长时,滚动体瞬时接触半径与已形成的滚道半径不一致,导致加载过程润滑状态整体优于卸载过程;周期性载荷变化下润滑状态优于恒定载荷下的润滑状态,毛细力和表面张力作用下的润滑剂回填是其诱因;不同载荷下接触半径变化梯度的增加有利于润滑剂的回填,使得卸载末期润滑油膜反弹。

关键词: 周期性载荷, 润滑剂回填, 润滑状态, 乏油, 光干涉

Abstract: Using the ball-on-disc single contact optical thin film measurement apparatus, the lubricant replenishment and lubrication states under cyclic loading are observed. The results show that if the rolling element running distance in the loading/unloading process is larger than the circumference of the track, the instant contact width will be inconstant with the existing track width. In consequence, the lubrication state in the loading process is better to some extent than that of the unloading case. Moreover, the lubrication state under cyclic loading is superior to the steady case, mainly due to the lubricant replenishment under capillary and surface tension effects. The lubricant replenishment can be improved due to an increase in the contact radius variation gradient, causing the film thickness to rebound at the end of unloading.

Key words: cyclic loading, lubrication replenishment, lubrication state, starvation, optical interferometry

中图分类号:

TH117

金旭阳, 栗心明, 刘耀, 杨萍, 郭峰, 高军斌. 周期性载荷下润滑剂回填效应试验观察[J]. 机械工程学报, 2024, 60(3): 203-213.

JIN Xuyang, LI Xinming, LIU Yao, YANG Ping, GUO Feng, GAO Junbin. Observation of Lubricant Replenishment under Cyclic Loading[J]. Journal of Mechanical Engineering, 2024, 60(3): 203-213.

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周期性载荷下润滑剂回填效应试验观察

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