Fluid Film Lubrication with Nonlinear Four-Element Viscoelastic Fluids (4th Report, Finite-Width Journal Bearings)

Hirotsugu Hayashi, Jun Tomioka, Sanae Wada

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In order to establish an analytical procedure for viscoelastic fluid film lubrication, a modified Reynolds equation for finite-width bearings based on a nonlinear four-element model was derived in the first paper. In the second and third papers the effects of nonlinear viscoelastic characteristics on the film pressure of parallel circular bearings were discussed by comparing the theories with the experiments. In this paper, by applying the modified Reynolds equation to a finite-width journal bearing which is vibrated sinusoidally in one direction, the numerical procedure for finite-width bearings is clarified and the bearing performance is calculated theoretically. In addition, experiments of finite-width journal bearings using lubricating oils containing high molecular-weight polymers as viscoelastic fluids are carried out, and good agreement is shown between the experimental results and the theoretical predictions.

Original languageEnglish
Pages (from-to)735-742
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume54
Issue number499
DOIs
Publication statusPublished - 1988
Externally publishedYes

Fingerprint

Bearings (structural)
Journal bearings
Lubrication
Reynolds equation
Fluids
Lubricating oils
Experiments
Molecular weight
Polymers

Keywords

  • Finite-width Jounal Bearing
  • Four-element Model
  • Lubricant
  • Lubrication Theory
  • Sinusoidal Squeezing Motion
  • Viscoelastic Fluid

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this

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title = "Fluid Film Lubrication with Nonlinear Four-Element Viscoelastic Fluids (4th Report, Finite-Width Journal Bearings)",
abstract = "In order to establish an analytical procedure for viscoelastic fluid film lubrication, a modified Reynolds equation for finite-width bearings based on a nonlinear four-element model was derived in the first paper. In the second and third papers the effects of nonlinear viscoelastic characteristics on the film pressure of parallel circular bearings were discussed by comparing the theories with the experiments. In this paper, by applying the modified Reynolds equation to a finite-width journal bearing which is vibrated sinusoidally in one direction, the numerical procedure for finite-width bearings is clarified and the bearing performance is calculated theoretically. In addition, experiments of finite-width journal bearings using lubricating oils containing high molecular-weight polymers as viscoelastic fluids are carried out, and good agreement is shown between the experimental results and the theoretical predictions.",
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T1 - Fluid Film Lubrication with Nonlinear Four-Element Viscoelastic Fluids (4th Report, Finite-Width Journal Bearings)

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AU - Tomioka, Jun

AU - Wada, Sanae

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Y1 - 1988

N2 - In order to establish an analytical procedure for viscoelastic fluid film lubrication, a modified Reynolds equation for finite-width bearings based on a nonlinear four-element model was derived in the first paper. In the second and third papers the effects of nonlinear viscoelastic characteristics on the film pressure of parallel circular bearings were discussed by comparing the theories with the experiments. In this paper, by applying the modified Reynolds equation to a finite-width journal bearing which is vibrated sinusoidally in one direction, the numerical procedure for finite-width bearings is clarified and the bearing performance is calculated theoretically. In addition, experiments of finite-width journal bearings using lubricating oils containing high molecular-weight polymers as viscoelastic fluids are carried out, and good agreement is shown between the experimental results and the theoretical predictions.

AB - In order to establish an analytical procedure for viscoelastic fluid film lubrication, a modified Reynolds equation for finite-width bearings based on a nonlinear four-element model was derived in the first paper. In the second and third papers the effects of nonlinear viscoelastic characteristics on the film pressure of parallel circular bearings were discussed by comparing the theories with the experiments. In this paper, by applying the modified Reynolds equation to a finite-width journal bearing which is vibrated sinusoidally in one direction, the numerical procedure for finite-width bearings is clarified and the bearing performance is calculated theoretically. In addition, experiments of finite-width journal bearings using lubricating oils containing high molecular-weight polymers as viscoelastic fluids are carried out, and good agreement is shown between the experimental results and the theoretical predictions.

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