Effects of Housing Stiffness and Bearing Dimension on Engine Bearing Performance by Elastohydrodynamic Lubrication Analysis

Okamoto, Yutaka; Hanahashi, Minoru; Katagiri, Takeshi

doi:10.1115/1.1314604

Cited by 11 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Okamoto et al (2000) studied important effects of journal bearing rigidity on bearing performance and elastic deformation of thrust bearings. He studied the effect of simultaneous change of bearing rigidity and bearing dimensions on bearing performance using elasto‐hydrodynamic lubrication theory.…”

Section: Introductionmentioning

confidence: 99%

The effects of bearing distortion on the performance of hydrodynamic thrust bearings

Güllü

2005

Industrial Lubrication and Tribology

View full text Add to dashboard Cite

PurposeIn this work, the performance characteristics of thrust bearings are studied by taking into account bearing distortions.Design/methodology/approachThe pressure distribution in the bearing is found using Reynolds' equation. Reynolds' equation is solved under isothermal conditions by assuming oil viscosity constant. The amount of deformation in the bearing is determined using constitute equations applied to linear elastic materials. It is preferred to work with dimensionless equations for the result to be meaningful. The results of the finite differences method gives superior performance for analyzing the behavior of a bearing undergoing on elastic deformation. The amount of deformation which corresponds to a certain pressure and load carrying capability of the bearing after and before deformation are found and compared.FindingsThe comparison is carried out for steel‐steel and steel‐bronze material pairs. It is found that there is a decrease of 2.13 percent in the load carrying capacity of the bearing for the material pair of steel‐bronze. This decrease may be important for some applications.Originality/valueThe present investigation includes distortion of pads only. Distortion of runner is ignored since it is assumed to be rigid. This assumption may cause serious deviations in computing performance characteristics.

show abstract

Section: Introductionmentioning

confidence: 99%

The effects of bearing distortion on the performance of hydrodynamic thrust bearings

Güllü

2005

Industrial Lubrication and Tribology

View full text Add to dashboard Cite

show abstract

“…The impact of flexibility in bearing liner for determination of deformation coefficient parameter was defined relatively by the factors 26) Rj, C, t, µ, Uo and Em. The dimensions of bearings and their stiffness was studied for an application of connecting rod housing 27) . A deterministic numerical solution 28) was used to know the combined impact of pad deformation and mixed lubrication on performance of partial bearing.…”

Section: Introductionmentioning

confidence: 99%

Performance Characteristics of a Deformed 120-Degree Partial Bearing with Couple Stress Lubrication

Lambha¹,

Kumar²,

Verma³

2022

Evergreen

View full text Add to dashboard Cite

The influence of using a fluid with couple stresses as lubricant on the performance of 120° partial bearing is studied here. The effect of variation in liner deformation is also considered. Modified Reynold's equation along with the elasticity equation is solved by using an FEM approach to predict the properties in static and dynamic form. The properties studied are peak pressure, carrying capacity of load, stiffness characteristic, damping characteristics. Based on the results it is concluded that for a deformed bearing liner dynamic performance of 120° partial bearing are enhanced by using the fluid with couple stresses.

show abstract

Wear study and EHD lubrication analysis on connecting rod big end bearings of off‐highway application engine

Nayak

Rane²,

Anarghya

et al. 2020

Lubrication Science

View full text Add to dashboard Cite

The connecting rod big end bearings are under dynamic lubrication during working cycle, and in most of the time, the con rod is subjected to compressive stress. The conventional method of performing an EHL analysis on a bearing involves development of complex mathematical equations and simplification of actual physical model. This paper presents a methodology to model and simulate the elastohydrodynamic lubrication and wear study of connecting rod big end bearings of off‐highway application engine using the application of computational fluid dynamics (CFD) and computational structural dynamics (CSD) approaches. The pressure field for a full journal bearing operating under laminar flow regime with various eccentricities was obtained by CFD, and fluid pressure distribution and deformation in the bearing liner due to pressure were evaluated using FSI approach. Relevant parameters of lubrication characteristics were analyzed to optimize the eccentricity value. The maximum bearing load value of 21 kN was noticed at TDC position for the optimum eccentricity. The load distribution indicated critical points in the bearing, and the data obtained from bearing load and sliding velocity of journal were used in Archard's wear relation to determine the wear depth along the bearing width. The simulated wear results were compared with three‐cylinder off‐highway application engine con rod big end bearings, which ran for 1000 hours at full load condition, and satisfactory agreement was observed between experiment and simulation values.

show abstract

Effects of Housing Stiffness and Bearing Dimension on Engine Bearing Performance by Elastohydrodynamic Lubrication Analysis

Cited by 11 publications

References 3 publications

The effects of bearing distortion on the performance of hydrodynamic thrust bearings

The effects of bearing distortion on the performance of hydrodynamic thrust bearings

Performance Characteristics of a Deformed 120-Degree Partial Bearing with Couple Stress Lubrication

Wear study and EHD lubrication analysis on connecting rod big end bearings of off‐highway application engine

Contact Info

Product

Resources

About