NDLI: Occurrence of Wall Slip in Elastohydrodynamic Lubrication Contacts

Content Provider	Springer Nature Link
Author	Guo, F. Wong, P. L. Geng, M. Kaneta, M.
Copyright Year	2009
Abstract	Preliminary experimental work has been carried out to identify some of the boundary slip phenomena of highly pressurised polybutenes in an elastohydrodynamic lubrication (EHL) conjunction. The movement of the oil is signified using an entrapment that can be readily formed by the impact of a steel ball against a layer of oil on a glass block in an optical EHL test apparatus. The post-impact lateral movement of the entrapment was investigated under the conditions: (i) pure rolling, (ii) pure glass block sliding (steel ball stationary) and (iii) pure ball sliding (glass block stationary). It was observed that under pure rolling the entrapped oil travels within the contact region at the entrainment speed, which is correlated with EHL theory. Under pure glass block sliding conditions, the speed of the entrapped oil core is less than the entrainment speed, and in the extreme cases, this core can be nearly stationary. Under pure ball sliding conditions, the oil core moves at a speed greater than the entrainment speed. The observation indicates that the oil/steel ball interface can sustain higher shear stress than the oil/glass (chromium coated) interface and there is a boundary slip in terms of relative sliding at the latter interface under the experimental conditions. Furthermore, the amount of slip increases with an increase in the pressure. These experiments provide evidence of the existence of wall slippage, which leads to the abnormal EHL film profile characterised with an inlet dimple as reported earlier.
Starting Page	103
Ending Page	111
Page Count	9
File Format	PDF
ISSN	10238883
Journal	Tribology Letters
Volume Number	34
Issue Number	2
e-ISSN	15732711
Language	English
Publisher	Springer US
Publisher Date	2009-02-20
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Boundary slip Elastohydrodynamic lubrication High pressure rheology Critical shear stress Nanotechnology Physical Chemistry Theoretical and Applied Mechanics Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Thin-Film Rheology and Tribology of Magnetorheological Fluids in Isoviscous-EHL Contacts

Stress Analysis on Layered Materials in Point Elastohydrodynamic-Lubricated Contacts

Localized Boundary Effect on Elastohydrodynamic Lubricated Film Shape

An Analytical Approach for Prediction of Elastohydrodynamic Friction with Inlet Shear Heating and Starvation

Study of Boundary Slippage Using Movement of a Post-Impact EHL Dimple Under Conditions of Pure Sliding and Zero Entrainment Velocity

Experimental Investigation of Lubrication Properties at High Contact Pressure

Experimental and Numerical Analysis of Soft Elastohydrodynamic Lubrication in Line Contact

Boundary Layer Behaviour in Circular EHL Contacts in the Elastic-Piezoviscous Regime

Application of Spectroscopic Reflectometry to Elastohydrodynamic Lubrication Films Study

Occurrence of Wall Slip in Elastohydrodynamic Lubrication Contacts

Similar Documents

Thin-Film Rheology and Tribology of Magnetorheological Fluids in Isoviscous-EHL Contacts

Stress Analysis on Layered Materials in Point Elastohydrodynamic-Lubricated Contacts

Localized Boundary Effect on Elastohydrodynamic Lubricated Film Shape

An Analytical Approach for Prediction of Elastohydrodynamic Friction with Inlet Shear Heating and Starvation

Study of Boundary Slippage Using Movement of a Post-Impact EHL Dimple Under Conditions of Pure Sliding and Zero Entrainment Velocity

Experimental Investigation of Lubrication Properties at High Contact Pressure

Experimental and Numerical Analysis of Soft Elastohydrodynamic Lubrication in Line Contact

Boundary Layer Behaviour in Circular EHL Contacts in the Elastic-Piezoviscous Regime

Application of Spectroscopic Reflectometry to Elastohydrodynamic Lubrication Films Study

Occurrence of Wall Slip in Elastohydrodynamic Lubrication Contacts