东南大学学报（英文版）2021，Vol.37Issue(3)：264-271,8.DOI:10.3969/j.issn.1003-7985.2021.03.005
微观粗糙接触和径向游隙对曲柄销轴承摩擦性能的影响
Influence of micro asperity contact and radial clearance on the tribological properties of crankpin bearings
摘要
Abstract
A new hybrid numerical method that couples the dynamic slider-crank mechanism (SCM) and crankpin bearing(CB) lubrication models is proposed to analyze the effect of micro asperity contact on the tribological properties of a CB.In the hybrid model,the dynamic equations of the SCM are established based on the Newton method,while the lubrication equations of the CB are established on the basis of the Reynolds equation.Experimental data of the engine are also used in simulation analyses to enhance the reliability of the results.The load-bearing capacity (LBC) and friction force of the CB are selected as objective functions.Results show that the LBC has a negligible effect on the tribological properties of the CB,but the friction force greatly affects the resistance of the bearing under different radial clearances and surface roughness values.In particular,the maximum friction force in the asperity contact region accoums for 40.5％ of the maximum total friction force at a radial clearance of 5 μm and 77.7％ of the maximum total friction of the CB with a surface roughness of 10 μm.关键词
曲柄销轴承/摩擦性能/曲柄机制/粗糙接触Key words
crankpin bearing/tribological property/slider-crank mechanism/asperity contact分类
交通工程引用本文复制引用
阮文廉,张建润,黄大成..微观粗糙接触和径向游隙对曲柄销轴承摩擦性能的影响[J].东南大学学报（英文版）,2021,37(3):264-271,8.基金项目
The National Key Research and Development Project(No.2019YFB2006402),the Open Fund Project of Key Laboratory of Intelligent Conveying Technology and Device,Hubei Polytechnic Uni-versity. （No.2019YFB2006402）
