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Boundary conditions for elastohydrodynamics of circular point contacts

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journal contribution
posted on 11.03.2014, 12:14 by Mahdi Mohammadpour, P.M. Johns-Rahnejat, Homer Rahnejat, Ramsey Gohar
The paper presents the solution of an elastohydrodynamic point contact condition using inlet and outlet lubricant entrainment with partial counter-flow. The inlet and outlet boundaries are determined using potential flow analysis for the pure rolling of contiguous surfaces. This shows that Swift-Stieber boundary conditions best conform to the observed partial counter-flow at the inlet conjunction, satisfying the compatibility condition. For the outlet region the same is true when Prandtl-Hopkins boundary conditions are employed. Using these boundary conditions, the predictions conform closely to the measured pressure distribution using a deposited pressure sensitive micro-transducer in a ball-to-flat race contact. Furthermore, the predicted conjunctional shape closely conforms to the often observed characteristic key-hole conjunction observed through optical interferometry. The combined numerical-experimental analysis with realistic boundary conditions described here has not hitherto been reported in literature.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Tribology Letters

Volume

53

Pages

107-118

Citation

MOHAMMADPOUR, M. ... et al, 2014. Boundary conditions for elastohydrodynamics of circular point contacts. Tribology Letters, 53 (1), pp.107-118.

Publisher

© Springer Science + Business Media

Version

AM (Accepted Manuscript)

Acceptance date

14/10/2013

Publication date

2013-10-29

Copyright date

2014

Notes

The final publication is available at Springer via http://dx.doi.org/10.1007/s11249-013-0249-0

ISSN

1023-8883

eISSN

1573-2711

Language

en

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