Aligned and misaligned contacts of rollers to races in elastohydrodynamic finite line conjunctions

The paper provides a solution for finite line concentrated contact of a roller-to-race under aligned and misaligned conditions. The lubricated contact conjunction is subject to an elastohydrodynamic regime of lubrication under isothermal conditions. Of particular interest are the edge stress discont...

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Main Authors: M. Kushwaha, Homer Rahnejat, Ramsey Gohar
Format: Default Article
Published: 2002
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Online Access:https://hdl.handle.net/2134/4771
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spelling rr-article-95611462002-01-01T00:00:00Z Aligned and misaligned contacts of rollers to races in elastohydrodynamic finite line conjunctions M. Kushwaha (7208627) Homer Rahnejat (1247550) Ramsey Gohar (7205852) Mechanical engineering not elsewhere classified Concentrated finite line contact Elastohydrodynamic lubrication Aligned and misaligned contacts Mechanical Engineering not elsewhere classified Mechanical Engineering The paper provides a solution for finite line concentrated contact of a roller-to-race under aligned and misaligned conditions. The lubricated contact conjunction is subject to an elastohydrodynamic regime of lubrication under isothermal conditions. Of particular interest are the edge stress discontinuities, represented by large secondary pressure spikes at the side constriction and to the rear exit in the contact domain. These pressure 'pips' are considerably larger in magnitude than those occurring in the central exit of the contact. The presence of pressure peaks inhibits the flow of lubricant in their vicinity, causing islands of minimum lubricant film thickness at the sides of the contact, referred to as the end closure films. The paper shows that the film shape and pressure distribution at the extremities of a finite line contact are not revealed by the traditional line contact solutions usually undertaken. The flow pattern becomes more complex with roller misalignment and the edge effects described are exacerbated. The paper provides the first ever solution of misaligned roller-to-race contact for moderate to high loaded elastohydrodynamic conjunctions. The numerical predictions conform well with both experimental and numerical findings of others for the cases where similar work has been reported. 2002-01-01T00:00:00Z Text Journal contribution 2134/4771 https://figshare.com/articles/journal_contribution/Aligned_and_misaligned_contacts_of_rollers_to_races_in_elastohydrodynamic_finite_line_conjunctions/9561146 CC BY-NC-ND 4.0
institution Loughborough University
collection Figshare
topic Mechanical engineering not elsewhere classified
Concentrated finite line contact
Elastohydrodynamic lubrication
Aligned and misaligned contacts
Mechanical Engineering not elsewhere classified
Mechanical Engineering
spellingShingle Mechanical engineering not elsewhere classified
Concentrated finite line contact
Elastohydrodynamic lubrication
Aligned and misaligned contacts
Mechanical Engineering not elsewhere classified
Mechanical Engineering
M. Kushwaha
Homer Rahnejat
Ramsey Gohar
Aligned and misaligned contacts of rollers to races in elastohydrodynamic finite line conjunctions
description The paper provides a solution for finite line concentrated contact of a roller-to-race under aligned and misaligned conditions. The lubricated contact conjunction is subject to an elastohydrodynamic regime of lubrication under isothermal conditions. Of particular interest are the edge stress discontinuities, represented by large secondary pressure spikes at the side constriction and to the rear exit in the contact domain. These pressure 'pips' are considerably larger in magnitude than those occurring in the central exit of the contact. The presence of pressure peaks inhibits the flow of lubricant in their vicinity, causing islands of minimum lubricant film thickness at the sides of the contact, referred to as the end closure films. The paper shows that the film shape and pressure distribution at the extremities of a finite line contact are not revealed by the traditional line contact solutions usually undertaken. The flow pattern becomes more complex with roller misalignment and the edge effects described are exacerbated. The paper provides the first ever solution of misaligned roller-to-race contact for moderate to high loaded elastohydrodynamic conjunctions. The numerical predictions conform well with both experimental and numerical findings of others for the cases where similar work has been reported.
format Default
Article
author M. Kushwaha
Homer Rahnejat
Ramsey Gohar
author_facet M. Kushwaha
Homer Rahnejat
Ramsey Gohar
author_sort M. Kushwaha (7208627)
title Aligned and misaligned contacts of rollers to races in elastohydrodynamic finite line conjunctions
title_short Aligned and misaligned contacts of rollers to races in elastohydrodynamic finite line conjunctions
title_full Aligned and misaligned contacts of rollers to races in elastohydrodynamic finite line conjunctions
title_fullStr Aligned and misaligned contacts of rollers to races in elastohydrodynamic finite line conjunctions
title_full_unstemmed Aligned and misaligned contacts of rollers to races in elastohydrodynamic finite line conjunctions
title_sort aligned and misaligned contacts of rollers to races in elastohydrodynamic finite line conjunctions
publishDate 2002
url https://hdl.handle.net/2134/4771
_version_ 1794844759750082560