High Pressure Rheology for Quantitative Elastohydrodynamics, Bair, Scott

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Автор: Scott S Bair Название: High Pressure Rheology for Quantitative Elastohydrodynamics,54 ISBN: 0444522433 ISBN-13(EAN): 9780444522436 Издательство: Elsevier Science Цена: 29700 р. Наличие на складе: Есть у поставщикаПоставка под заказ. Описание: 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.

Автор: Scott S Bair Название: High Pressure Rheology for Quantitative Elastohydrodynamics,54 ISBN: 0444522433 ISBN-13(EAN): 9780444522436 Издательство: Elsevier Science Рейтинг: Цена: 29700 р. Наличие на складе: Есть у поставщика Поставка под заказ.

Описание: 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.

Описание: This volume contains the proceedings of the IUTAM Symposium on Elastohydrodynamics and Microelastohydrodynamics held in Cardiff from 1-3 September 2004. It contains 31 articles by leading researchers in the field. The symposium focused on theoretical, experimental and computational issues in elastohydrodynamic lubrication (EHL) both in relation to smooth surfaces and in situations where the film is of the same order or thinner than the surface roughness (micro-EHL). The last IUTAM Symposium in this general area of contact of deformable bodies was in 1974. The emphasis in the Symposium was upon fundamental issues such as: solution methods; lubricant rheological models, thermal effects; both low and high elastic modulus situations; human and replacement joints; fluid traction; dynamic effects, asperity lubrication and the failure of lubrication; surface fatigue and thermal distress under EHL conditions. The book will be useful to those active in basic elastohydrodynamics research who wish to gain an up-to-date understanding of the subject from leading experts in the field.

Описание: Preface; Reflections on early studies of elasto-hydrodynamic lubrication, by D. Dowson and G. R. Higginson; Rheological challenges and opportunities for EHL, by Scott Bair and Peter Gordon; Adjoint error estimation and spatial adaptivity for EHL-like models, by D. Hart, C.E. Goodyer, M. Berzins, P.K. Jimack, and L.E. Scales; Surface roughness attenuation in EHL line and point contacts under conditions of starved lubrication, by C.H. Venner and C.J. Hooke; Unsteady EHL: 'nodal' & 'modal' formulations, by J.F. Booker and S. Boedo; The influence of spinning on the performance of EHL in elliptical contacts, by P. Yang and J. Cui; Review and prospects for the development of EHL of finite line contacts, by X. Chen, H. Sun and X. Shen; Thermal EHL analysis of cylindrical roller under heavy load, by H. Sun and X. Chen; Effect of elastic deformation of the journal bearing shell on its dynamic stability, by E. Saber and H.A. El-Gamal; A possible molecular dynamic structure contribution to elastohydrodynamic lubrication, by M. Fox; Modelling of lubricant degradation and elastohydrodynamic lubrication, by I.I. Kudish, R.G. Airapetyan and M.J. Covitch; The effect of viscoelasticity on the performance of dynamically loaded journal bearings, by D.Rh. Gwynllyw and T.N. Phillips; Behaviour of transverse ridges passing through a circular EHL conjunction, by M. Kaneta, H. Nishikawa and K. Matsuda; Experimental investigation on the pressure distribution for pure sliding EHL contacts with dented surfaces, by P. Vergne and F. Ville; EHL film thickness behaviour under high pressure - comparison between numerical and experimental results, by M. Hartl, I. Krupka and D. Zhu; Correlation between model test devices and full bearing tests under grease lubricated conditions, by H. Baly, G. Poll, P.M. Cann and A.A. Lubrecht; Experimental and theoretical approaches to thin film lubrication studies, by I. Lee-Prudhoe, C.H. Venner, P.M. Cann and H.A. Spikes; Extension ofconventional optical EHL technique, by P.L. Wong and F. Guo; Surface modification for piston ring and liner, by N.G. Bolander and F. Sadeghi; Variations of an EHL film under boundary slippage, by F. Guo and P.L. Wong; Elastohydrodynamic lubrication in 'soft-on-soft' natural synovial joints; 'hard-on-soft' cushion and 'hard-on-hard' metal-on-metal total joint replacements, by D. Dowson; Stribeck curve for starved concentrated contacts, by I.C. Faraon and D.J. Schipper; Investigation on thermal distress and scuffing failure under micro-EHL conditions, by A. Polacco, G. Pugliese, E. Ciulli, G.M. Bragallini and M. Facchini; Effect of slip ratio on rolling contact fatigue of bearing steel rollers lubricated with traction oil, by A. Nakajima and T. Mawatari; Prediction of fatigue damage in rough surface EHL, by H. Qiao, H.P. Evans and R.W. Snidle; Wear modelling in worm gears, by K.J. Sharif, H.P. Evans, R.W. Snidle; Lubrication modelling of artificial hip joints, by F.C. Wang and Z.M. Jin; Fractals and surface roughness in EHL, by F.M. Borodich; Roughness attenuation and pressure rippling in EHL contacts, by C.J. Hooke; Effect of film thickness ratio on gearing contact fatigue life, by C.K. Gao, X.M. Qi, R.W. Snidle and H.P. Evans; Surface contact in micro-EHL, by M.J.A. Holmes, H.P. Evans and R.W. Snidle; APPENDIX: The scientific Programme; Author Index; Subject Index.

Автор: Kudish Название: Elastohydrodynamic Lubrication for Line and Point Contacts ISBN: 1466583894 ISBN-13(EAN): 9781466583894 Издательство: Taylor&Francis Рейтинг: Цена: 39930 р. Наличие на складе: Есть у поставщика Поставка под заказ.

Описание: Elastohydrodynamic Lubrication for Line and Point Contacts: Asymptotic and Numerical Approaches describes a coherent asymptotic approach to the analysis of lubrication problems for heavily loaded line and point contacts. This approach leads to unified asymptotic equations for line and point contacts as well as stable numerical algorithms for the solution of these elastohydrodynamic lubrication (EHL) problems. A Unique Approach to Analyzing Lubrication Problems for Heavily Loaded Line and Point Contacts The book presents a robust combination of asymptotic and numerical techniques to solve EHL problems for lightly and heavily loaded line and point contacts. It also proposes a reasonably simple and naturally based regularization approach that produces stable solutions in heavily loaded EHL contacts. The book offers a clear understanding of the processes taking place in heavily loaded line and point EHL contacts as well as of the proper solution structure for EHL problems. It outlines concrete ways to determine important design parameters such as lubrication film thickness and frictional stresses and forces. The book establishes a close link between EHL problems for heavily loaded point and line contacts. Fine Tune Your Methods for Solving Elastohydrodynamic Lubrication Problems In most cases, the equations in the book are derived from first principles. The author describes each of the asymptotic and numerical methods in detail, making it easier for readers to apply them to various problems. The problem solutions are presented in the form of simple analytical formulas, graphs, and tables. Almost all the chapters include exercises that highlight key points and skills. Suitable for engineering and applied mathematics students, this is also a unique resource for researchers and practitioners who want to fine tune their solution methods and design better numerical methods to tackle elastohydrodynamic lubrication problems.

Автор: R. P. Chhabra Название: Non-Newtonian Flow and Applied Rheology, ISBN: 0750685328 ISBN-13(EAN): 9780750685320 Издательство: Elsevier Science Рейтинг: Цена: 18414 р. Наличие на складе: Поставка под заказ.

Описание: This book bridges the gap between the theoretical work of the rheologist, and the practical needs of those who have to design and operate the systems in which these materials are handled or processed. It is an established and important reference for senior level mechanical engineers, chemical and process engineers, as well as any engineer or scientist who needs to study or work with these fluids, including pharmaceutical engineers, mineral processing engineers, medical researchers, water and civil engineers. This new edition covers a considerably broader range of topics than its predecessor, including computational fluid dynamics modelling techniques, liquid/solid flows and applications to areas such as food processing, among others.

Автор: Wilson C. Chin, PhD Название: Computational Rheology for Pipeline and Annular Flow, ISBN: 0884153207 ISBN-13(EAN): 9780884153207 Издательство: Elsevier Science Цена: 14999 р. Наличие на складе: Поставка под заказ.

Описание: Computational Rheology for Pipeline and Annular Flow develops and applies modern analytical and computational finite difference methods for solving flow problems in drilling and production. It also provides valuable insights into flow assurance analysis in subsea pipeline design. Using modeling techniques that simulate the motion of non-Newtonian fluids, e.g., power law, Bingham plastic, and Herschel-Bulkley flows, this book presents proven annular flow methodologies for cuttings transport and stuck pipe analysis based on detailed experimental data obtained from highly deviated and horizontal wells. These methods are applied for highly eccentric borehole geometries to the design of pipeline bundles in subsea applications, where such annular configurations arise in velocity and thermal modeling applications.

Also covered extensively are the design and modeling of pipelines having non-circular cross-sections, where deviations from ideal circular geometries arise from plugging due to wax deposition and the presence of hydrates and asphaltenes. As in the case of annular flows, the new algorithms apply to fluids with general rheological description; for example, the methods show very precisely how flow rate and pressure gradient vary nonlinearly in practical problem situations.

Elastohydrodynamic Lubrication for Line and Point Contacts: Asymptotic and Numerical Approaches describes a coherent asymptotic approach to the analysis of lubrication problems for heavily loaded line and point contacts. This approach leads to unified asymptotic equations for line and point contacts as well as stable numerical algorithms for the solution of these elastohydrodynamic lubrication (EHL) problems.

A Unique Approach to Analyzing Lubrication Problems for Heavily Loaded Line and Point Contacts

The book presents a robust combination of asymptotic and numerical techniques to solve EHL problems for lightly and heavily loaded line and point contacts. It also proposes a reasonably simple and naturally based regularization approach that produces stable solutions in heavily loaded EHL contacts. The book offers a clear understanding of the processes taking place in heavily loaded line and point EHL contacts as well as of the proper solution structure for EHL problems. It outlines concrete ways to determine important design parameters such as lubrication film thickness and frictional stresses and forces. The book establishes a close link between EHL problems for heavily loaded point and line contacts.

Fine Tune Your Methods for Solving Elastohydrodynamic Lubrication Problems

In most cases, the equations in the book are derived from first principles. The author describes each of the asymptotic and numerical methods in detail, making it easier for readers to apply them to various problems. The problem solutions are presented in the form of simple analytical formulas, graphs, and tables. Almost all the chapters include exercises that highlight key points and skills. Suitable for engineering and applied mathematics students, this is also a unique resource for researchers and practitioners who want to fine tune their solution methods and design better numerical methods to tackle elastohydrodynamic lubrication problems.

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