线接触滚/滑状态下表面形貌的弹性变形研究

doi:10.3901/JME.2018.05.142

机械工程学报 ›› 2018, Vol. 54 ›› Issue (5): 142-148.doi: 10.3901/JME.2018.05.142

线接触滚/滑状态下表面形貌的弹性变形研究

李直, 陈剑, 沈锦龙, 刘焜

合肥工业大学机械与汽车工程学院合肥 230009

收稿日期:2017-03-11 修回日期:2017-06-19 出版日期:2018-03-05 发布日期:2018-03-05
通讯作者: 刘焜(通信作者),男,1963年出生,博士,教授,博士研究生导师。主要研究方向为摩擦学设计。E-mail:liukun@hfut.edu.cn
作者简介:李直,男,1988年出生,博士研究生。主要研究方向为齿轮动力学及摩擦学。E-mail:lizhi2qn@163.com
基金资助:
国家自然科学基金（11472096）和安徽省科技攻关（1501021026）资助项目。

Elastic Deformation of Surface Topography under Line Contact and Sliding-rolling Conditions

LI Zhi, CHEN Jian, SHEN Jinlong, LIU Kun

School of Mechanical and Automobile Engineering, Hefei University of Technology, Hefei 230009

Received:2017-03-11 Revised:2017-06-19 Online:2018-03-05 Published:2018-03-05

摘要/Abstract

摘要： 结合基于表面形貌频谱分析的预测方法和润滑理论对线接触弹流状态下表面形貌的弹性变形进行了研究。制造了4种表面形貌高度算术平均值S_a相同但结构不同的织构表面形貌，通过对表面形貌的频率分量进行降幅处理，并结合弹流润滑模型建立相应的算法，获得了不同载荷和转速工况下接触界面的表面形貌弹性变形结果。在此基础上，选用ISO 25178中的三维形貌高度参数S_a、功能参数V_vv和特征参数S_ds对弹性变形前后的表面形貌进行了表征和分析，并通过计算膜厚比对比了4种织构表面在考虑弹性变形前后的润滑特性。结果表明，弹流接触过程中表面形貌发生明显的弹性变形，且随着载荷和转速变化呈现不同的规律；不同结构的表面形貌弹性变形程度不同，弹性变形导致的表面形貌的变化对接触表面间润滑性能有明显影响。

关键词: 表面形貌, 弹性变形, 频谱分析, 润滑特性

Abstract: The elastic deformation of surface topography under EHL line contact condition is investigated by using a prediction method based on the spectrum analysis of surface topography and lubrication theory. Four textured surfaces which have same value of arithmetical mean height S_a but with different topography structure are manufactured. By reducing the amplitude of harmonic components and combining with EHL model, an algorithm is established, and the elastic deformation results of four textured surface topographies under different load and speed conditions are obtained. The height parameter S_a, the function parameter V_vv and the feature parameter S_ds in the ISO 25178 are selected to characterize and analyze the surface topography before and after deformation. By calculating the film thickness ratios, the lubrication characteristics of four textured surfaces before and after elastic deformation are compared. The results show that the elastic deformation of the textured surfaces is obvious in the contact process, and the change of 3D surface topography parameters shows different trend with the change of load and rotational speed. The variation of 3D surface topography caused by elastic deformation has obvious influence on the lubrication property of the contact surfaces.

Key words: elastic deformation, lubrication property, spectrum analysis, surface topography

中图分类号:

TH117

李直, 陈剑, 沈锦龙, 刘焜. 线接触滚/滑状态下表面形貌的弹性变形研究[J]. 机械工程学报, 2018, 54(5): 142-148.

LI Zhi, CHEN Jian, SHEN Jinlong, LIU Kun. Elastic Deformation of Surface Topography under Line Contact and Sliding-rolling Conditions[J]. Journal of Mechanical Engineering, 2018, 54(5): 142-148.

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线接触滚/滑状态下表面形貌的弹性变形研究

Elastic Deformation of Surface Topography under Line Contact and Sliding-rolling Conditions

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