Download or read book Journal Bearing Databook written by Tsuneo Someya and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Journal bearings, which are used in all kinds of rotating machinery, do not only support static loads, such as the weight of rotors and load caused by transmitted torque of reduction gears, but are, in addition almost the only machine element that is able to suppress various exciting forces acting on the rotating shaft. As rotating machines have become large and multi-staged, while compactness, high speed, and high output have also been realized in recent years, not only has the bearing load increased, but also the magnitude and variety of exciting forces. Therefore, the role and importance of journal bearings have increased tremendous ly. In particular, for the design of rotating machines with low vibration levels and high reliability, knowledge of the exact characteristic data of bearings, and especial ly of the stiffness or spring coefficients and the damping coefficients of oil films in bearings, is essential. However, the amount of reliable data now applicable to practical design is limited. Through the activity of the Research Subcommittee on Dynamic Charac teristics of Journal Bearings and Their Applications (designated as PSC 28), estab lished and organized in June 1979 through May 1982 within the Japan Society of Mechanical Engineers (JSME), these coefficients, together with static characteris tics, have been calculated and also measured on a number of new test rigs.
Download or read book Journal Bearings in Turbomachinery written by David MacLeish. Smith and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the functioning of hydrodynamic journal bearings in turbomachinery. It makes particular reference to large turbine generator and marine propulsion plant. Journal-bearing design in this field has been based mainly on experience supplemented by full-scale experimental test. Development is becoming influenced to an increasing extent by research and analysis. Particular attention is given in this book to correlation of research and analytical work with the observed operating characteristics of journal bearings. The physical phenomena in bearings are complicated, and analysis is rendered convenient only by making simplifying assumptions. The engineer must know which assumptions are serviceable and in what operating conditions they may be applied. Current British and European practice in journal bearings is illus trated. An examination is made of steady running characteristics, as predicted by theory and as established by test. Some account is given of the dynamic characteristics of journal bearings and of their in fluence in machine vibration. Service experience of journal bearings is reviewed, and reference is made to possible future trends in develop ment. The book is the outcome of work on turbine plant with Metropolitan Vickers and its successor Associated Electrical Industries. The A.E.!. and English Electric activities in this field have recently been incor porated in English Electric-A.E.!. Turbine-Generators Ltd. The author expresses his gratitude to the Company for permission to publish the results. He thanks the English Electric Co. Ltd., C. A.
Download or read book Water Lubricated Journal Bearings written by Wojciech Litwin and published by Elsevier. This book was released on 2023-08-23 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water Lubricated Journal Bearings: Marine Applications, Design, and Operational Problems and Solutions provides cutting-edge design solutions, common problems and methods for avoiding them, and material selection considerations for use of water lubricated journal bearings in marine environments. These bearings have many advantages, among them the absence of the potential for oil contamination. They are also sensitive, and their production processes can be challenging, but this book outlines techniques and concepts designed to overcome these challenges, emphasizing their role in durable and reliable propulsion systems in modern, safe, and environment-friendly shipping. Propeller shafts, water lubricated stern tube bearings, problems frequently encountered with water lubricated propeller shaft bearings and sliding bearings alongside solutions to these problems are all covered, as are the hydrodynamic properties of water lubricated bearings, operation at low revolution speeds, high speed bearings, hybrid bearings, and more. Foundational concepts of tribology related to friction, lubrication, wear, and fluid/solid and solid/solid interactions in ship stern tube and water lubricated turbine machinery are also discussed. - Provides cutting-edge design solutions and material selection considerations for water-lubricated journal bearings - Outlines common problems and solutions for overcoming them when working with water-lubricated propeller shaft bearings, sliding bearings, and hybrid bearings - Presents theoretical and experimental research on bearings, including the influence of bush shape imperfections and misalignment
Download or read book Optimization of Self acting Herringbone Journal Bearings for Maximum Radial Load Capacity written by Bernard J. Hamrock and published by . This book was released on 1971 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bearing Design in Machinery written by Avraham Harnoy and published by CRC Press. This book was released on 2002-09-25 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the fundamental principles of bearing selection, design, and tribology, this book discusses basic physical principles of bearing selection, lubrication, design computations, advanced bearings materials, arrangement, housing, and seals, as well as recent developments in bearings for high-speed aircraft engines. The author explores unique solutions to challenging design problems and presents rare case studies, such as hydrodynamic and rolling-element bearings in series and adjustable hydrostatic pads for large bearings. He focuses on the design considerations and calculations specific to hydrodynamic journal bearings, hydrostatic bearings, and rolling element bearings.
Download or read book Non Circular Journal Bearings written by Amit Chauhan and published by Springer. This book was released on 2016-01-25 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This brief details non-circular journal bearing configurations. The author describes the mathematical and experimental studies that pertain to non-circular journal bearing profiles and how they can be applied to other types of bearing profiles with some modifications. He also examines non-circular journal bearing classifications, the methodology needed to carry out mathematical modeling, and the experimental procedures used to determine oil-film temperature and pressures.
Download or read book Bearings written by M. J. Neale and published by Elsevier. This book was released on 2013-10-22 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bearings: A Tribology Handbook is a practical guide on bearings, based on materials published in the first edition of the Tribology Handbook. The handbook has been updated matching international requirements. The book is divided in four main parts. The first part is a description of different bearing types and forms pertaining to continuous and oscillatory movements. A selection of journal and thrust bearings as to their different load capacity, performance, and special environmental conditions is explained. The second part deals with the physical properties and load capacity of plain bearings. Other kinds of bearing, such as the dry rubbing bearings; porous metal bearings; grease, wick, and drip fed journal bearings; ring and disc fed journal bearings; steady load pressure fed journal bearings; high-speed bearings; and crankshaft bearings, are considered regarding their performance, maintenance, and suitability to specific conditions. The third part focuses on one type of bearing: the rolling bearing. The selection, composition, shaft and housing design, and fitting and mounting for this type is discussed. The last part explains special bearing types such as slide bearings, instrument jewels (which are a combination of a steel pivot and a synthetic sapphire jewel), and electromagnetic bearings that are essentially powerful electromagnets. The need for surface treatments and coatings is then explained for optimum usage. The handbook is useful for design engineers, mechanical engineers, and material researchers. Mechanical, aeronautical, and automotive students; car mechanics; and those interested in machine and car maintenance will find this handbook a handy reference.
Download or read book Hydrodynamic Lubrication written by J. Frene and published by Elsevier. This book was released on 1997-11-10 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrodynamic Lubrication is the culmination of over 20 years close, collaborative work by the five authors and discusses the practical use of the formalization of low pressure lubrication. The work concentrates on the developments to journal and thrust bearings and includes subjects such as: • the dynamic behaviour of plain and tilting-pads • the thermal aspects • the positive and negative effects of non-cyclindricity and shape defects resulting from manufacturing or operation • the effects of inertia • the appearance of Taylor's vortices and of turbulence and their repercussions. The book contains an abundance of test results objectively compared with theoretical conclusions and a chapter on "technical considerations" to ensure that draft mechanisms will work satisfactorily under the imposed conditions. Hydrodynamic Lubrication is an essential reference book for future and practising engineers who want to put hydrodynamic and hydrostatic journal bearings and thrust bearings into operation under conditions of total safety.
Download or read book Gear Drive Systems written by Peter Lynwander and published by CRC Press. This book was released on 1983-06-08 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents practical gearbox design and application information to individuals responsible for the specification and operation of mechanical systems incorporating gear drives. It focuses on parallel shaft and planetary units using spur and helical gearing.
Download or read book Modeling and simulation of porous journal bearings in multibody systems written by Buuren, Sietze van and published by KIT Scientific Publishing. This book was released on 2014-07-30 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: A specific cost-efficient type of plain journal bearing is the porous journal bearing, which possesses a pervious bush that serves as a lubricant reservoir. The current work is concerned with modeling porous journal bearings in multibody systems, for which dynamical models are needed to investigate the bearing's behavior. Such porous journal bearing models as well as models of elementary rotor-bearing systems including these, were developed and investigated during the course for this work.
Download or read book Air Bearings written by Farid Al-Bender and published by John Wiley & Sons. This book was released on 2021-01-15 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive treatise on gas bearing theory, design and application This book treats the fundamental aspects of gas bearings of different configurations (thrust, radial, circular, conical) and operating principles (externally pressurized, self-acting, hybrid, squeeze), guiding the reader throughout the design process from theoretical modelling, design parameters, numerical formulation, through experimental characterisation and practical design and fabrication. The book devotes a substantial part to the dynamic stability issues (pneumatic hammering, sub-synchronous whirling, active dynamic compensation and control), treating them comprehensively from theoretical and experimental points of view. Key features: Systematic and thorough treatment of the topic. Summarizes relevant previous knowledge with extensive references. Includes numerical modelling and solutions useful for practical application. Thorough treatment of the gas-film dynamics problem including active control. Discusses high-speed bearings and applications. Air Bearings: Theory, Design and Applications is a useful reference for academics, researchers, instructors, and design engineers. The contents will help readers to formulate a gas-bearing problem correctly, set up the basic equations, solve them establishing the static and dynamic characteristics, utilise these to examine the scope of the design space of a given problem, and evaluate practical issues, be they in design, construction or testing.
Download or read book Hydrostatic Aerostatic and Hybrid Bearing Design written by W. Brian Rowe and published by Elsevier. This book was released on 2012-03-28 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Front Cover; Hydrostatic, Aerostatic, andHybrid Bearing Design; Copyright; Contents; Preface; Usual Meaning of Symbols; Chapter 1 -- Application; 1.1 Introduction; 1.2 What are Hydrostatic, Hybrid, and Aerostatic Bearings?; 1.3 When are Hydrostatic, Hybrid, and Aerostatic Bearings Employed?; 1.4 Bearing Selection; 1.5 Bearing Categories; 1.6 Commercial Applications; 1.7 Materials and Manufacture; 1.8 Aerostatic Bearings; 1.9 How to Read and Use the Book; References; Chapter 2 -- Basic Flow Theory; 2.1 Introduction; 2.2 Viscosity; 2.3 Density and Consistent Units; 2.4 Compressibility.
Download or read book Internal Combustion Engine in Theory and Practice second edition revised Volume 2 written by Charles Fayette Taylor and published by MIT Press. This book was released on 1985-03-19 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revised edition of Taylor's classic work on the internal-combustion engine incorporates changes and additions in engine design and control that have been brought on by the world petroleum crisis, the subsequent emphasis on fuel economy, and the legal restraints on air pollution. The fundamentals and the topical organization, however, remain the same. The analytic rather than merely descriptive treatment of actual engine cycles, the exhaustive studies of air capacity, heat flow, friction, and the effects of cylinder size, and the emphasis on application have been preserved. These are the basic qualities that have made Taylor's work indispensable to more than one generation of engineers and designers of internal-combustion engines, as well as to teachers and graduate students in the fields of power, internal-combustion engineering, and general machine design.
Download or read book Turbomachinery Rotordynamics written by Dara Childs and published by John Wiley & Sons. This book was released on 1993-04-16 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Imparts the theory and analysis regarding the dynamics of rotating machinery in order to design such rotating devices as turbines, jet engines, pumps and power-transmission shafts. Takes into account the forces acting upon machine structures, bearings and related components. Provides numerical techniques for analyzing and understanding rotor systems with examples of actual designs. Features an excellent treatment of numerical methods available to obtain computer solutions for authentic design problems.
Download or read book Encyclopedia of Tribology written by C. Kajdas and published by Elsevier. This book was released on 1990-10-09 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: The multidisciplinary nature of tribology, the conflicting theories and approaches to it found in the literature, plus the fact that definitions of the same phenomenon often differ widely, prompted the authors to compile this work. The aim of this encyclopedia is to provide information on specific tribological terms. The entire field of tribology encompassing lubrication, friction and wear, i.e. the science and technology of interacting surfaces in relative motion, is covered. An extensive description of the chemical and biological aspects of tribology is given, including a wide range of current references and authors. The reader is also referred to relevant literature for most of the terms listed. The information presented has been made as up-to-date as possible, taking into account both the theoretical and practical nature of the subject.The encyclopedia will be an indispensable reference source in the work of engineers, chemists, physicists, metallurgists, materials and surface scientists, biotechnologists, as well as research workers in these fields.
Download or read book Hydrodynamic Lubrication written by Yukio Hori and published by Springer Science & Business Media. This book was released on 2006 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses hydrodynamic lubrication in detail, based on the author’s own researches. Although this subject plays an important role in mechanical engineering, few books have been published on the subject. The first four chapters of this book are preparations for the following five. This book was written with graduate students, researchers and designers in view.
Download or read book Wear Testing of Advanced Materials written by Ramesh Divakar and published by ASTM International. This book was released on 1992 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:
