Mechanism of direct contact and numerical model for analysis of line contact mixed elastohydrodynamic lubrication in pure rolling conditions

Kazunori Ichimaru, Takehiro Morita

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Numerical analyses of mixed EHL were carried out using three different analysis models for the line contact between a smooth surface and a rough surface with a single transverse sinusoidal bump. The transient Reynolds equation expressed on the coordinate system, of which the origin is fixed to the center of the Hertz contact conjunction, which is used so far in EHL or micro-EHL analyses, was inadequate for analyzing of severe asperity interactions in mixed elastohydrodynamic conditions. A hybrid model that presupposes a differentiated application of a Reynolds equation for a local coordinate system moving with asperity and a global Reynolds equation was proposed as a numerical analysis model for mixed EHL, which was enough to eliminate the aforementioned demerits. Applying the hybrid model obtained physically reasonable results both on a global and local scale.

Original languageEnglish
Pages (from-to)49-62
Number of pages14
JournalJapanese Journal of Tribology
Volume49
Issue number1
Publication statusPublished - Jan 1 2004

Fingerprint

Elastohydrodynamic lubrication
Reynolds equation
Numerical models
Elastohydrodynamics
Numerical analysis

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

@article{98b1ed19f817489fbfdc2721c2dd9629,
title = "Mechanism of direct contact and numerical model for analysis of line contact mixed elastohydrodynamic lubrication in pure rolling conditions",
abstract = "Numerical analyses of mixed EHL were carried out using three different analysis models for the line contact between a smooth surface and a rough surface with a single transverse sinusoidal bump. The transient Reynolds equation expressed on the coordinate system, of which the origin is fixed to the center of the Hertz contact conjunction, which is used so far in EHL or micro-EHL analyses, was inadequate for analyzing of severe asperity interactions in mixed elastohydrodynamic conditions. A hybrid model that presupposes a differentiated application of a Reynolds equation for a local coordinate system moving with asperity and a global Reynolds equation was proposed as a numerical analysis model for mixed EHL, which was enough to eliminate the aforementioned demerits. Applying the hybrid model obtained physically reasonable results both on a global and local scale.",
author = "Kazunori Ichimaru and Takehiro Morita",
year = "2004",
month = "1",
day = "1",
language = "English",
volume = "49",
pages = "49--62",
journal = "Japanese Journal of Tribology",
issn = "1045-7828",
publisher = "Allerton Press Inc.",
number = "1",

}

TY - JOUR

T1 - Mechanism of direct contact and numerical model for analysis of line contact mixed elastohydrodynamic lubrication in pure rolling conditions

AU - Ichimaru, Kazunori

AU - Morita, Takehiro

PY - 2004/1/1

Y1 - 2004/1/1

N2 - Numerical analyses of mixed EHL were carried out using three different analysis models for the line contact between a smooth surface and a rough surface with a single transverse sinusoidal bump. The transient Reynolds equation expressed on the coordinate system, of which the origin is fixed to the center of the Hertz contact conjunction, which is used so far in EHL or micro-EHL analyses, was inadequate for analyzing of severe asperity interactions in mixed elastohydrodynamic conditions. A hybrid model that presupposes a differentiated application of a Reynolds equation for a local coordinate system moving with asperity and a global Reynolds equation was proposed as a numerical analysis model for mixed EHL, which was enough to eliminate the aforementioned demerits. Applying the hybrid model obtained physically reasonable results both on a global and local scale.

AB - Numerical analyses of mixed EHL were carried out using three different analysis models for the line contact between a smooth surface and a rough surface with a single transverse sinusoidal bump. The transient Reynolds equation expressed on the coordinate system, of which the origin is fixed to the center of the Hertz contact conjunction, which is used so far in EHL or micro-EHL analyses, was inadequate for analyzing of severe asperity interactions in mixed elastohydrodynamic conditions. A hybrid model that presupposes a differentiated application of a Reynolds equation for a local coordinate system moving with asperity and a global Reynolds equation was proposed as a numerical analysis model for mixed EHL, which was enough to eliminate the aforementioned demerits. Applying the hybrid model obtained physically reasonable results both on a global and local scale.

UR - http://www.scopus.com/inward/record.url?scp=10644226102&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=10644226102&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:10644226102

VL - 49

SP - 49

EP - 62

JO - Japanese Journal of Tribology

JF - Japanese Journal of Tribology

SN - 1045-7828

IS - 1

ER -