Topography transformations due to running-in of rolling-sliding non-conformal contacts

被引：24

作者：

Hansen, Jonny ^{[1
,2
]}

Bjorling, Marcus ^{[1
]}

Larsson, Roland ^{[1
]}

机构：

[1] Lulea Univ Technol, Div Machine Elements, SE-97187 Lulea, Sweden

[2] Scania CV AB, Transmiss Dev, Sodertalje, Sweden

来源：

TRIBOLOGY INTERNATIONAL | 2020年 / 144卷

基金：

瑞典研究理事会;

关键词：

Micro-EHL; Friction; Break-in; Surface re-location; SURFACE-ROUGHNESS; MIXED LUBRICATION; ELASTOHYDRODYNAMIC LUBRICATION; FILM THICKNESS; PLASTIC-DEFORMATION; EHL; FRICTION; AMPLITUDE; BEHAVIOR; TRANSITION;

D O I：

10.1016/j.triboint.2019.106126

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A ball-on-disc machine was operated under conditions relevant to heavily loaded gears. Various levels of isotropic surface finishes were evaluated to reveal the influence on elasto-hydrodynamic lubrication (EHL). Stribeck tests were conducted for insight about roughness effects in all regimes, whereas lift-off tests were conducted to investigate the influence on running-in. A 3D surface re-location approach was developed to enable studies of the topography on exactly the same area before and after test. This helps to find asperity level details about how topographies must transform to allow a shift from the mixed- and boundary lubrication regimes, into the full film micro-EHL regime. The micro-conformity was highlighted to play a key-role for EHL lift-off that precedes the completion of running-in.

引用

页数：19

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