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Shear Stresses Below Asperities in Hertzian Contact as Measured by Photoelasticity

Shear Stresses Below Asperities in Hertzian Contact as Measured by Photoelasticity <jats:p>The effect of surface roughness on shear stresses below the surface of an unlubricated Hertzian contact is analyzed using a three dimensional stress freezing photoelastic technique. The shear stresses in the micro-Hertzian contact in each asperity are shown to combine and form, at a greater depth below the surface, shear stresses generally associated with contact stress theory. These macro-Hertzian stresses are compared with the micro-Hertzian stresses in the asperities. The results are also correlated with an existing asperity contact theory and are discussed in relation to the contact fatigue phenomenon.</jats:p> http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Lubrication Technology CrossRef

Shear Stresses Below Asperities in Hertzian Contact as Measured by Photoelasticity

Journal of Lubrication Technology , Volume 95 (3): 277-283 – Jul 1, 1973

Shear Stresses Below Asperities in Hertzian Contact as Measured by Photoelasticity


Abstract

<jats:p>The effect of surface roughness on shear stresses below the surface of an unlubricated Hertzian contact is analyzed using a three dimensional stress freezing photoelastic technique. The shear stresses in the micro-Hertzian contact in each asperity are shown to combine and form, at a greater depth below the surface, shear stresses generally associated with contact stress theory. These macro-Hertzian stresses are compared with the micro-Hertzian stresses in the asperities. The results are also correlated with an existing asperity contact theory and are discussed in relation to the contact fatigue phenomenon.</jats:p>

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Publisher
CrossRef
ISSN
0022-2305
DOI
10.1115/1.3451803
Publisher site
See Article on Publisher Site

Abstract

<jats:p>The effect of surface roughness on shear stresses below the surface of an unlubricated Hertzian contact is analyzed using a three dimensional stress freezing photoelastic technique. The shear stresses in the micro-Hertzian contact in each asperity are shown to combine and form, at a greater depth below the surface, shear stresses generally associated with contact stress theory. These macro-Hertzian stresses are compared with the micro-Hertzian stresses in the asperities. The results are also correlated with an existing asperity contact theory and are discussed in relation to the contact fatigue phenomenon.</jats:p>

Journal

Journal of Lubrication TechnologyCrossRef

Published: Jul 1, 1973

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