Download or read book Experimental Investigations of Elastohydrodynamic Lubrication written by and published by . This book was released on 1983 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AN EXPERIMENTAL INVESTIGATION OF THE ELASTOHYDRODYNAMIC LUBRICATION OF POINT CONTACTS IN PURE SLIDING written by DAVID MICHAEL SANBORN and published by . This book was released on 1969 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Elasto Hydrodynamic Lubrication written by D. Dowson and published by Elsevier. This book was released on 2014-07-18 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Elastohydrodynamic Lubrication Experimental Investigation written by F. K. Orcutt and published by . This book was released on 1964 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this program is to improve the life, reliability and load capacity of concentrated contact machine elements such as rolling-element bearings, gears and cams. The chosen means of accomplishing this end are to investigate the fundamental process of lubrication in concentrated rolling-sliding contacts and seek, wherever possible, to relate the findings to the practical aspects of bearing, gear and cam performance. (Author).
Download or read book Survey of Present Information on Elastohydrodynamic Lubrication of Gearing written by L. G. Schneider and published by . This book was released on 1967 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report is a survey of numerous published theoretical and experimental investigations in elastohydrodynamic lubrication with the intent of establishing their applicability to design and to lubrication investigations related to future high performance Navy gearing. While great progress in understanding the parameters of importance in elastohydrodynamic lubrication has been made, workable solutions for use in normal design are available only for limited conditions which are realized in rolling contact when little or no sliding occurs. In gearing, this condition exists only at the pitch point so that theoretical prediction of oil-film thickness becomes increasingly overly optimistic as tooth contact distance from the pitch line (and thus sliding velocity) increases. (Author).
Download or read book Elasto hydrodynamic Lubrication written by D. Dowson and published by . This book was released on 1966 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Elastohydrodynamic Lubrication written by Institution of Mechanical Engineers (Great Britain). Lubrication and Wear Group and published by . This book was released on 1966 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Study of Elastohydrodynamic Lubrication written by F. K. ORCUTT and published by . This book was released on 1964 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes direct experimental measurements of pressure distribution, surface temperature and film shape or deformation profile which were obtained during an investigation of elastohydrodynamic lubrication. These measurements illustrate effects of load, rolling speed, lubricant properties and sliding speed. Their purpose is to provide guidance and verification for the development of an elastohydrodynamic theory which can then be generally applied to practical problems in the manner which has been described. The results agree with the thermal-elastohydrodynamic theory of Cheng in many respects, but there are also differences which indicate that certain modifications in the formulation of the theory should be made. (Author).
Download or read book An Experimental Study of Grease in Elastohydrodynamic Lubrication written by Siu-Yun Poon and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rheological Effects on Friction in Elastohydrodynamic Lubrication written by Edward G. Trachman and published by . This book was released on 1973 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analytical and experimental investigation is presented of the friction in a rolling and sliding elastohydrodynamic lubricated contact. The rheological behavior of the lubricant is described in terms of two viscoelastic models. These models represent the separate effects of non-Newtonian behavior and the transient response of the fluid. A unified description of the non-Newtonian shear rate dependence of the viscosity is presented as a new hyperbolic liquid model. The transient response of viscosity, following the rapid pressure rise encountered in the contact, is described by a compressional viscoelastic model of the volume response of a liquid to an applied pressure step. The resulting momentum and energy equations are solved by an iterative numerical technique, and a friction coefficient is calculated. The experimental study was performed, with two synthetic paraffinic lubricants, to verify the friction predictions of the analysis. The values of friction coefficient from theory and experiment are in close agreement.
Download or read book Elastohydrodynamics 96 written by C. Taylor and published by Elsevier. This book was released on 1997-07-22 with total page 773 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume represents the latest issue of a collection of Proceedings each dealing with a different topic in Tribology. This volume contains the Proceedings from the 23rd Leeds-Lyon Symposium which addressed the topic of Elastohydrodynamics and was attended by many international experts in the field.The Keynote Address was presented by Professor Stathis Ioannides on the subject of "Tribology in Rolling Element Bearings" and was followed by fifteen other sessions covering a wide variety of general areas from "Experimental" to "Lubricant Properties". In addition, nine other invited technical papers were presented to support the sessions.
Download or read book Elastohydrodynamics written by Ramsey Gohar and published by World Scientific. This book was released on 2001 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elastohydrodynamic lubrication (EHL) is a difficult topic, embracing several disciplines, which can cause many problems for engineers and scientists. This up-to-date volume explains the subject both theoretically and experimentally. Moreover, with a refreshing approach and using several novel techniques of application, it provides lucid coverage of new and important findings. Here, in one volume, are the results of much research over the last forty years. The author's clear explanation of the theory of EHL is authoritatively applied to a wide range of related topics, with physical explanations wherever possible. Many of the experimental techniques described were carried out at the Imperial College Lubrication Laboratory, where the application of interferometry (a means of measuring the EHL film thickness) was pioneered.
Download or read book Advances in Mechanical Design written by Jianrong Tan and published by Springer. This book was released on 2020-09-16 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on innovation, these proceedings present recent advances in the field of mechanical design in China and offer researchers, scholars and scientists an international platform for presenting their research findings and exchanging ideas. Gathering outstanding papers from the 2019 International Conference on Mechanical Design (2019 ICMD) and the 20th Mechanical Design Annual Conference, the content is divided into six major sections: industrial design, reliability design, green design, intelligent design, bionic design and innovative design. Readers will learn about the latest trends, cutting-edge findings and hot topics in the field of design.
Download or read book Interdisciplinary Approach to the Lubrication of Concentrated Contacts written by P. M.. Ku and published by . This book was released on 1970 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study of Friction in Elastohydrodynamic Lubrication written by M. D. Longfield and published by . This book was released on 1964 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of friction torque have been made on a disk machine by introducing a torque sensor into the drive to one of the disks. Experimental readings of torque have been made for loads up to approximately 40,000 psi maximum Hertzian contact pressure, for rolling speeds from 15.7 to 314 inches per second and for sliding speeds up to 130 inches per second. A comparison has been made between two oils of dissimilar characteristics. The friction torques developed with an oil of high pressureviscosity exponent and low viscosity index form a strong contrast with the torques developed by an oil of relatively low pressure-viscosity exponent and high viscosity index. The difference is most marked at high loads and low sliding speeds - the pressure sensitive oil developing much larger coefficients of friction. The dependence of friction upon load and sliding speed is in accordance with recent theories of elastohydrodynamic lubrication. It has been confirmed that the effective viscosity within the contact is dependent on the rolling speed of the disks. Data is presented showing the variation of the pressure-viscosity exponent with rolling speed.
Download or read book Experimental Investigation of the Influence of Lubricant Additives on Rheology of Elastohydrodynamic Films written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rheology and Elastohydrodynamic Lubrication written by B.O. Jacobson and published by Elsevier. This book was released on 1991-07-24 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
