Frictional response of lubricant in EHL contact under transient bi-directional shear loading

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F17%3APU125487" target="_blank" >RIV/00216305:26210/17:PU125487 - isvavai.cz</a>

Result on the web

<a href="http://www.tribology.fink.rs/journals/2017/2017-4/2017-4-10.html" target="_blank" >http://www.tribology.fink.rs/journals/2017/2017-4/2017-4-10.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.24874/ti.2017.39.04.10" target="_blank" >10.24874/ti.2017.39.04.10</a>

Result language

angličtina

Original language name

Frictional response of lubricant in EHL contact under transient bi-directional shear loading

Original language description

Consideration of performance, efficiency and energy consumption is nowadays an inherent part of the design of every modern machine. These factors are mainly determined by mechanisms taking place within the lubricated contacts. Unfortunately, the physical origins of these mechanisms have been investigated exclusively for steady conditions that do not occur in actual contacts of machines affected by vibrations. This study presents novel experimental data describing friction in the elastohydrodynamically lubricated contact exposed to the main steady sliding motion along with lateral sliding micro-oscillations. Friction forces were measured simultaneously in two perpendicular directions of point contact. It is shown that the lubricant response in the main direction of motion suffers from shear thinning and thermal effects whereas its lateral response is isothermal Newtonian. Moreover, the lateral friction affects the friction in the main direction, but not vice versa, when the majority of shear flow is maintained in this main direction. These finding are attributed to the perturbation of structural arrangement of lubricant. The results also suggest that a response of mineral oils to shearing is anisotropic. A limiting shear stress is discussed since the total friction was not able to exceed a certain value.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/GA17-23235S" target="_blank" >GA17-23235S: Effect of thermal properties of contacting bodies on lubricant flow in Hertzian non-smooth contacts</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Tribology in Industry

ISSN

0354-8996

e-ISSN

—

Volume of the periodical

39

Issue of the periodical within the volume

4

Country of publishing house

RS - THE REPUBLIC OF SERBIA

Number of pages

13

Pages from-to

506-518

UT code for WoS article

—

EID of the result in the Scopus database

2-s2.0-85038419665