Predicting friction reliably and accurately in journal bearings-A systematic validation of simulation results with experimental measurements

被引：53

作者：

Allmaier, H. ^{[1
]}

Priestner, C. ^{[1
]}

Six, C. ^{[1
]}

Priebsch, H. H. ^{[1
]}

Forstner, C. ^{[2
]}

Novotny-Farkas, F. ^{[3
]}

机构：

[1] Virtual Vehicle Competence Ctr, A-8010 Graz, Austria

[2] MIBA Bearing Grp, A-4663 Laakirchen, Austria

[3] OMV Refining & Mkt GmbH, A-1220 Vienna, Austria

来源：

TRIBOLOGY INTERNATIONAL | 2011年 / 44卷 / 10期

关键词：

Friction; Journal bearing; EHD; Measurement; ASPERITY LEVEL CONFORMITY; AVERAGE FLOW MODEL; COUPLE STRESS; PARTIAL EHL; LUBRICATION; WEAR;

D O I：

10.1016/j.triboint.2011.05.010

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

It is the aim of this work to predict friction in journal bearings reliably and accurately under realistic dynamic working conditions. To this purpose elastohydrodynamic (EHD) calculations using an extensive oil-model and including an approach to the conformal roughnesses of the bearing surfaces are carried out for transient loads typical for current utility vehicles (40 MPa) as well as for considerably higher specific loads (70 MPa) and for different lubricants (SAE10, SAE20, SAE30 and SAE40) to account for a large span of working conditions ranging from full film lubrication to mixed lubrication with metal-metal contact. The results obtained from this simulation model are compared to measurements performed on a journal bearing test rig. We find that the results of the presented approach agree very closely with the experimental values. The presented approach allows consequently to investigate the effectiveness of changes in bearing geometry, bearing materials, bearing surface roughness, lubricant viscosity and engine operating conditions to reduce friction in journal bearings. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1151 / 1160

页数：10

共 30 条

[1] A finite element analysis of dynamically loaded journal bearings in mixed lubrication [J].