The Rheology of Lubricants

The Rheology of Lubricants PDF Author: T. C. Davenport
Publisher:
ISBN:
Category : Lubrication and lubricants
Languages : en
Pages : 168

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The Rheology of Lubricants

The Rheology of Lubricants PDF Author: T. C. Davenport
Publisher:
ISBN:
Category : Lubrication and lubricants
Languages : en
Pages : 168

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Book Description


Proprietes Rheologiques Des Lubrifiants

Proprietes Rheologiques Des Lubrifiants PDF Author: Jean Briant
Publisher: Editions TECHNIP
ISBN: 9782710805649
Category : Technology & Engineering
Languages : en
Pages : 302

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Rheology and Elastohydrodynamic Lubrication

Rheology and Elastohydrodynamic Lubrication PDF Author: B.O. Jacobson
Publisher: Elsevier
ISBN: 0080875831
Category : Science
Languages : en
Pages : 399

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Book Description
This book gives a thorough overview on recent developments in lubricant rheology, elastohydrodynamic lubrication and the effects of surface roughness and particulate contamination in the lubricant on the overall behaviour of a heavily loaded lubricated contact. One of the aims of the book is to make clear to the reader that a Newtonian model for the lubricant behaviour does not have enough degrees of freedom to be able to describe the friction - traction behaviour of heavily loaded lubricated contacts or the oil film build-up and collapse under surface asperities for rough surfaces. The book contains quite a lot of experimental data of lubricants at high pressures, both solidification pressures, compressibilities and shear strength increase coefficients, which make it possible to estimate the friction and power loss in heavily loaded lubricated contacts for different pressures, temperatures, sliding speeds, and lubricant types. This is the first time that data of this type has been included in a textbook and it is hoped that the questions highlighted will serve to initiate and guide future research in this field.

High Pressure Rheology for Quantitative Elastohydrodynamics

High Pressure Rheology for Quantitative Elastohydrodynamics PDF Author: Scott S. Bair
Publisher: Elsevier
ISBN: 0080475302
Category : Technology & Engineering
Languages : en
Pages : 262

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Book Description
Computational elastohydrodynamics, a part of tribology, has existed happily enough for about fifty years without the use of accurate models for the rheology of the liquids used as lubricants. For low molecular weight liquids, such as low viscosity mineral oils, it has been possible to calculate, with precision, the film thickness in a concentrated contact provided that the pressure and temperature are relatively low, even when the pressure variation of viscosity is not accurately modelled in detail. Other successes have been more qualitative in nature, using effective properties which come from the fitting of parameters used in calculations to experimental measurements of the contact behaviour, friction or film thickness. High Pressure Rheology for Quantitative Elastohydrodynamics is intended to provide a sufficiently accurate framework for the rheology of liquids at elevated pressure that it may be possible for computational elastohydrodynamics to discover the relationships between the behaviour of a lubricated concentrated contact and the measurable properties of the liquid lubricant. The required high-pressure measurement techniques are revealed in detail and data are presented for chemically well-defined liquids that may be used as quantitative reference materials. * Presents the property relations required for a quantitative calculation of the tribological behaviour of lubricated concentrated contacts.* Details of high-pressure experimental techniques.* Complete description of the pressure and temperature dependence of viscosity for high pressures.* Some little-known limitations on EHL modelling.

Lubricants and Special Fluids

Lubricants and Special Fluids PDF Author: V. Stepina
Publisher: Elsevier
ISBN: 0080875874
Category : Technology & Engineering
Languages : en
Pages : 719

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Book Description
The constitution, properties, production and applications of lubricants and related fluids of all states of aggregation are reviewed in this volume. Special attention is devoted to synthetic lubricants and to additives for lubricants. Standards of quality are listed, together with systems of classification and the most important specifications and methods of testing the properties of lubricants and their performance in service. Future trends in lubricants are also discussed. Non-conventional lubricants and additives are examined in detail. The relationship between constitution and properties of lubricants, e.g., the viscosity -temperature -pressure relationship, the behaviour in ageing, the biodegradability, synergisms and antagonisms in the blends of lubricants, of additives and lubricant-additive are analyzed. Guidelines for the selection of lubricants and fluids in the design, service and maintenance of machines and machine parts are also given. The work will be of interest to all those involved in the research and development of petrochemical and machinery industries, as well as lecturers and students specializing in this field.

The Rheology of Lubricants

The Rheology of Lubricants PDF Author: T. C. Davenport
Publisher: John Wiley & Sons
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 168

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Book Description


The Rheology of Lubricants

The Rheology of Lubricants PDF Author: Thomas C. Davenport
Publisher:
ISBN:
Category :
Languages : en
Pages : 148

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Book Description


Elasto-Hydrodynamic Lubrication

Elasto-Hydrodynamic Lubrication PDF Author: D. Dowson
Publisher: Elsevier
ISBN: 1483181898
Category : Technology & Engineering
Languages : en
Pages : 254

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Book Description
Elasto-Hydrodynamic Lubrication deals with the mechanism of elasto-hydrodynamic lubrication, that is, the lubrication regime in operation over the small areas where machine components are in nominal point or line contact. The lubrication of rigid contacts is discussed, along with the effects of high pressure on the lubricant and bounding solids. The governing equations for the solution of elasto-hydrodynamic problems are presented. Comprised of 13 chapters, this volume begins with an overview of elasto-hydrodynamic lubrication and representation of contacts by cylinders, followed by a discussion on equations relevant to lubrication, including the Reynolds equation. The reader is then introduced to lubrication of rigid cylinders; the importance of film thickness in highly loaded rigid contacts; the elasticity of solids in contact; and the theory of elasto-hydrodynamic lubrication. Subsequent chapters focus on apparatus and measurements of film thickness and film shape; friction and viscosity; and lubrication of gears and roller bearings. This book will be of interest to tribologists.

Mechanics and Chemistry in Lubrication

Mechanics and Chemistry in Lubrication PDF Author: A. Dorinson
Publisher: Elsevier
ISBN: 0080875734
Category : Technology & Engineering
Languages : en
Pages : 651

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Book Description
Although it is widely recognized that friction, wear and lubrication are linked together in a single interdisciplinary complex of scientific learning and technological practice, fragmented and specialized approaches still predominate. In this book, the authors examine lubrication from an interdisciplinary viewpoint. They demonstrate that once the treatment of lubrication is released from the confines of the fluid film concept, this interdisciplinary approach comes into full play. Tribological behavior in relation to lubrication is then examined from two major points of view: one is mechanical, not only with respect to the properties and behavior of the lubricant but also of the surfaces being lubricated. The other is chemical and encompasses the chemistry of the lubricant, the surfaces and the ambient surroundings. It is in the emphasis on the interaction of the basic mechanical and chemical processes in lubrication that this book differs from conventional treatments.

Low Temperature Lubricant Rheology Measurement and Relevance to Engine Operation

Low Temperature Lubricant Rheology Measurement and Relevance to Engine Operation PDF Author: Robert B. Rhodes
Publisher: ASTM International
ISBN: 0803114389
Category : Automobiles
Languages : en
Pages : 190

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Book Description
Papers were presented at a symposium held in Austin, Texas, in December 1991. Subjects include a history of ASTM accomplishments in low temperature engine oil rheology from 1966-1992, critical aspects of pumping viscosity by mini-rotary viscometer, the scanning Brookfield technique of low temperatur