Pressure spikes in elastohydrodynamics-some elastic considerations

Starting with the one-dimensional form of the Reynolds lubrication equation with a Barus fluid it is argued that the pressure spike characteristic of heavily loaded metallic contacts is closely logarithmic but not singular. Using results from rigid wedge indentation theory the implications upon the...

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Bibliographic Details
Published inWear Vol. 131; no. 1; pp. 151 - 161
Main Author Hall, R.W.
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 01.05.1989
Amsterdam Elsevier Science
New York, NY
Subjects
Applied sciences
Exact sciences and technology
Friction, wear, lubrication
Machine components
Mechanical engineering. Machine design
Lubricating oil
Deformation
Constraint
Elasticity
Theoretical study
Mechanical contact
Metal
Pressure
Calculating method
Lubricating film
Lubrication
Reynolds equation
Elastohydrodynamic lubrication
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Summary:Starting with the one-dimensional form of the Reynolds lubrication equation with a Barus fluid it is argued that the pressure spike characteristic of heavily loaded metallic contacts is closely logarithmic but not singular. Using results from rigid wedge indentation theory the implications upon the deformation and stress distribution within the contacting surfaces are examined. In particular, the surface stress concentration (principal shear stress) is examined and found to be less than the hertzian value for contacts operating in practical regions of parameter space. The influence of the familiar operating parameters g 3 and g 4 upon the spike's properties is also investigated.
ISSN:0043-1648
1873-2577
DOI:10.1016/0043-1648(89)90251-2