Sage Journals: Discover world-class research

Abstract

A model is presented that facilitates prediction of the transient solution for the pressure and film thickness in an elastohydrodynamically lubricated line contact for the case of arbitrary surface microgeometry (roughness) under the assumption of Newtonian lubricant behaviour and small roughness amplitude. In the model the two parts of the transient solution (particular integral and complementary function) are calculated for each Fourier component of a surface real roughness and combined to obtain the complete transient solution. As no time-consuming numerical simulations are required, the computational scheme forms a simple and efficient tool for use in a practical engineering environment. To validate the approach, first simple cases such as single dents and harmonic waviness were considered. The predictions obtained for these cases are compared with the results of full numerical simulations, showing good agreement. Subsequently the results obtained for a realistic roughness profile are presented.

Keywords

transient elastohydrodynamic lubrication real roughness surface waviness

Get full access to this article

View all access options for this article.

References

Grubin

A. N.

Investigation of the Contact of Machine Components (Ed. Ketova

Kh. F.

) (DSIR Transl. 337), (Vol. 30, 1949 (Central Scientific Research Institute for Technology and Mechanical Engineering, Moscow).

Dowson

Higginson

G. R.

A numerical solution to the elastohydrodynamic problem

J. Mech. Engng Sci., 1959, 1, 6–15.

Crook

A. W.

Lubrication of rollers, Part III

Trans. R. Soc. Lond. A, 1961, 254, 237–258.

Cheng

H. S.

A refined solution to the thermal elastohydrodynamic lubrication of rolling-sliding cylinders

Trans. ASLE, 1965, 8 (4), 397–410.

Patir

Cheng

H. S.

Effect of surface roughness on the central film thickness in EHD contacts. Elastohydrodynamics and related topics.

In Proceedings of the Fifth Leeds-Lyon Symposium on Tribology, Leeds, 1978, pp. 15–21 (Engineering Publications, London).

Venner

C. H.

Multilevel solution of the EHL line and point contact problems. PhD thesis, University of Twente, Enschede, The Netherlands, 1991.

Lubrecht

A. A.

Venner

C. H.

Aspects of two-sided surface waviness in a EHL line contact.

In Proceedings of the 19th Leeds-Lyon Symposium on Tribology, Leeds, 1992, pp. 205–224 (Elsevier, Amsterdam).

Morales-Espejel

G. E.

Félix Quiñonez

Kinematics of two-sided features in elastohydrodynamic lubrication

Proc. Instn Mech. Engrs, Part J, Journal of Engineering Tribology, 1999, 213 (J2), 95–108.

Greenwood

J. A.

Morales-Espejel

G. E.

The behaviour of transverse roughness in EHL contacts

Proc. Instn Mech. Engrs, Part J, Journal of Engineering Tribology, 1993, 208 (J2), 121–132.

10.

Venner

C. H.

Couhier

Lubrecht

A. A.

Greenwood

J. A.

Amplitude reduction of waviness in transient EHL line contacts. In

Elastohydrodynamics ′96, Proceedings of the 23rd Leeds-Lyon Symposium on Tribology (Eds Dowson

), 1997, pp. 103–112 (Elsevier, Amsterdam).

11.

Hooke

C. J.

Surface roughness modification in elastohydrodynamic line contacts operating in the elastic piezoviscous regime

Proc. Instn Mech. Engrs, Part J, Journal of Engineering Tribology, 1997, 212 (J2), 145–162.

12.

Lubrecht

A. A.

Graille

Venner

C. H.

Greenwood

J. A.

Waviness amplitude reduction in EHL line contacts under rolling-sliding

Trans. ASME, J. Tribology, 1998, 120, 705–709.

13.

Reynolds

On the theory of lubrication and its application to Mr. Beauchamp tower's experiments, including an experimental determination of the viscosity of olive oil

Phil. Trans. R. Soc. Land., 1886, 177, 157.

14.

Greenwood

J. A.

Johnson

K. L.

The behaviour of transverse roughness in EHL contacts

Wear, 1992, 153, 107–117.

15.

Couhier

Influence des rugosités sur les méchanismes de lubrification de contact elastohydrodynamique. PhD thesis, Institut National des Sciences Appliquées de Lyon, France, 1996.

16.

Greenwood

J. A.

Transverse roughness in elastohydrodynamic lubrication

Proc. Instn Mech. Engrs, Part J, Journal of Engineering Tribology, 1999, 213 (J5), 383–396.

17.

Venner

C. H.

Morales-Espejel

G. E.

Amplitude reduction of small amplitude waviness in transient elastohydrodynamically lubricated line contacts

Proc. Instn Mech. Engrs, Part J, Journal of Engineering Tribology, 1999, 213 (J6), 487–504.

Kinematics of transverse real roughness in elastohydrodynamically lubricated line contacts using Fourier analysis

Abstract

Abstract

Keywords

Get full access to this article

References