Bearing Dynamic Coefficients In Rotordynamics

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Bearing Dynamic Coefficients in Rotordynamics

Author : Lukasz Brenkacz
Publisher : John Wiley & Sons
ISBN 13 : 111975917X
Total Pages : 192 pages
Book Rating : 4.1/5 (197 download)

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Book Synopsis Bearing Dynamic Coefficients in Rotordynamics by : Lukasz Brenkacz

Download or read book Bearing Dynamic Coefficients in Rotordynamics written by Lukasz Brenkacz and published by John Wiley & Sons. This book was released on 2021-03-29 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to bearing dynamic coefficients in rotordynamics that includes various computation methods Bearing Dynamic Coefficients in Rotordynamics delivers an authoritative guide to the fundamentals of bearing and bearing dynamic coefficients containing various computation methods. Three of the most popular and state-of-the-art methods of determining coefficients are discussed in detail. The computation methods covered include an experimental linear method created by the author, and numerical linear and nonlinear methods using the finite element method. The author—a renowned expert on the topic—presents the results and discusses the limitations of the various methods. Accessibly written, the book provides a clear analysis of the fundamental phenomena in rotor dynamics and includes many illustrations from numerical analysis and the results of the experimental research. Filled with practical examples, the book also includes a companion website hosting code used to calculate the dynamic coefficients of journal bearings. This important book: Covers examples of different computation methods, presents results, and discusses limitations of each Reviews the fundamentals of bearing and bearing dynamic coefficients Includes illustrations from the numerical analysis and results of the experimental research Offers myriad practical examples and a companion website Written for researchers and practitioners working in rotordynamics, Bearing Dynamic Coefficients in Rotordynamics will also earn a place in the libraries of graduate students in mechanical and aerospace engineering who seek a comprehensive treatment of the foundations of this subject.

Bearing Dynamic Coefficients in Rotordynamics

Author : Lukasz Brenkacz
Publisher : John Wiley & Sons
ISBN 13 : 1119759269
Total Pages : 196 pages
Book Rating : 4.1/5 (197 download)

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Book Synopsis Bearing Dynamic Coefficients in Rotordynamics by : Lukasz Brenkacz

Download or read book Bearing Dynamic Coefficients in Rotordynamics written by Lukasz Brenkacz and published by John Wiley & Sons. This book was released on 2021-04-05 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to bearing dynamic coefficients in rotordynamics that includes various computation methods Bearing Dynamic Coefficients in Rotordynamics delivers an authoritative guide to the fundamentals of bearing and bearing dynamic coefficients containing various computation methods. Three of the most popular and state-of-the-art methods of determining coefficients are discussed in detail. The computation methods covered include an experimental linear method created by the author, and numerical linear and nonlinear methods using the finite element method. The author—a renowned expert on the topic—presents the results and discusses the limitations of the various methods. Accessibly written, the book provides a clear analysis of the fundamental phenomena in rotor dynamics and includes many illustrations from numerical analysis and the results of the experimental research. Filled with practical examples, the book also includes a companion website hosting code used to calculate the dynamic coefficients of journal bearings. This important book: Covers examples of different computation methods, presents results, and discusses limitations of each Reviews the fundamentals of bearing and bearing dynamic coefficients Includes illustrations from the numerical analysis and results of the experimental research Offers myriad practical examples and a companion website Written for researchers and practitioners working in rotordynamics, Bearing Dynamic Coefficients in Rotordynamics will also earn a place in the libraries of graduate students in mechanical and aerospace engineering who seek a comprehensive treatment of the foundations of this subject.

Rotor Dynamics

Author : J. S. Rao
Publisher : New Age International
ISBN 13 : 9788122409772
Total Pages : 460 pages
Book Rating : 4.4/5 (97 download)

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Book Synopsis Rotor Dynamics by : J. S. Rao

Download or read book Rotor Dynamics written by J. S. Rao and published by New Age International. This book was released on 1996 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Third Revised And Enlarged Edition Of The Book Presents An In-Depth Study Of The Dynamic Behaviour Of Rotating And Reciprocating Machinery. It Evolved Out Of Lectures Delivered At Different Universities Over The Last Two Decades. The Book Deals With Torsional And Bending Vibrations Of Rotors, Stability Aspects, Balancing And Condition Monitoring. Closed Form Solutions Are Given Wherever Possible And Parametric Studies Presented To Give A Clear Understanding Of The Subject. Transfer Matrix Methods Is Extensively Used For General Class Of Rotors For Both Bending And Torsional Vibrations.Special Attentions Are Given To Transient Analysis Of The Rotors Which Is Becoming An Essential Part Of The Design Of High Speed Machinery. Systems With Fluid Film Bearings, Cracked Rotors And Two Spool Rotors Are Also Presented.A First Course On Theory Of Vibration Is A Prerequisite To This Study. Analysis Used Is Fairly Simple, But Sufficiently Advanced To The Requisite Level Of Predicting Practical Observations. As Far As Possible, Practical Examples Are Illustrated, So That The Book Is Also Useful To Practising Engineers.A Special Feature Of This Book Is Diagnostics Of Rotating Machinery Using Vibration Signature Analysis And Application Of Expert Systems To A Field Engineer In Trouble Shooting Work.

Dynamics of Rotors and Foundations

Author : Erwin Krämer
Publisher : Springer Science & Business Media
ISBN 13 : 3662027984
Total Pages : 378 pages
Book Rating : 4.6/5 (62 download)

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Book Synopsis Dynamics of Rotors and Foundations by : Erwin Krämer

Download or read book Dynamics of Rotors and Foundations written by Erwin Krämer and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotordynamics are of great importance in the design, manufacture and assembly of turbomachines as well as in ensuring their safe operation. Also important are the dynamics of the foundation and its interaction with the dynamics of the rotor. This book is divided into four parts. Following a presentation of the basic theory the dynamics of rotors supported on several bearings. The third part describes the dynamics of foundations of turbine line-outs and the calculations for a turbomachine coupled with its foundation. The last part includes a section on estimation procedures, a comprehensive presentation of the theoryand practice of rotors having a transverse crack, a section on the mathematical fundamentals and a description of the computer program used for the examples in the book. The book addresses both the practical engineer and the theoretician and should provide manufacturers, operators, university and polytechnic lecturers and students with an understanding of the vibrations of turbomachines. The results are described in such a way that they can be easily understood and applied.

Proceedings of the 10th International Conference on Rotor Dynamics – IFToMM

Author : Katia Lucchesi Cavalca
Publisher : Springer
ISBN 13 : 3319992627
Total Pages : 546 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis Proceedings of the 10th International Conference on Rotor Dynamics – IFToMM by : Katia Lucchesi Cavalca

Download or read book Proceedings of the 10th International Conference on Rotor Dynamics – IFToMM written by Katia Lucchesi Cavalca and published by Springer. This book was released on 2018-08-20 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: IFToMM conferences have a history of success due to the various advances achieved in the field of rotor dynamics over the past three decades. These meetings have since become a leading global event, bringing together specialists from industry and academia to promote the exchange of knowledge, ideas, and information on the latest developments in the dynamics of rotating machinery. The scope of the conference is broad, including e.g. active components and vibration control, balancing, bearings, condition monitoring, dynamic analysis and stability, wind turbines and generators, electromechanical interactions in rotor dynamics and turbochargers. The proceedings are divided into four volumes. This first volume covers the following main topics: Active Components and Vibration Control; Balancing; Bearings: Fluid Film Bearings, Magnetic Bearings, Rolling Bearings and Seals; and Blades, Bladed Systems and Impellers.

Proceedings of the 9th IFToMM International Conference on Rotor Dynamics

Author : Paolo Pennacchi
Publisher : Springer
ISBN 13 : 3319065904
Total Pages : 2214 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Proceedings of the 9th IFToMM International Conference on Rotor Dynamics by : Paolo Pennacchi

Download or read book Proceedings of the 9th IFToMM International Conference on Rotor Dynamics written by Paolo Pennacchi and published by Springer. This book was released on 2015-05-26 with total page 2214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the 9th IFToMM International Conference on Rotor Dynamics. This conference is a premier global event that brings together specialists from the university and industry sectors worldwide in order to promote the exchange of knowledge, ideas, and information on the latest developments and applied technologies in the dynamics of rotating machinery. The coverage is wide ranging, including, for example, new ideas and trends in various aspects of bearing technologies, issues in the analysis of blade dynamic behavior, condition monitoring of different rotating machines, vibration control, electromechanical and fluid-structure interactions in rotating machinery, rotor dynamics of micro, nano and cryogenic machines, and applications of rotor dynamics in transportation engineering. Since its inception 32 years ago, the IFToMM International Conference on Rotor Dynamics has become an irreplaceable point of reference for those working in the field and this book reflects the high quality and diversity of content that the conference continues to guarantee.

Identifying Bearing Rotordynamic Coefficients Using an Extended Kalman Filter

Author : Bard A. Miller
Publisher : BiblioGov
ISBN 13 : 9781289221966
Total Pages : 26 pages
Book Rating : 4.2/5 (219 download)

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Book Synopsis Identifying Bearing Rotordynamic Coefficients Using an Extended Kalman Filter by : Bard A. Miller

Download or read book Identifying Bearing Rotordynamic Coefficients Using an Extended Kalman Filter written by Bard A. Miller and published by BiblioGov. This book was released on 2013-07 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Extended Kalman Filter is developed to estimate the linearized direct and indirect stiffness and damping force coefficients for bearings in rotor-dynamic applications from noisy measurements of the shaft displacement in response to imbalance and impact excitation. The bearing properties are modeled as stochastic random variables using a Gauss-Markov model. Noise terms are introduced into the system model to account for all of the estimation error, including modeling errors and uncertainties and the propagation of measurement errors into the parameter estimates. The system model contains two user-defined parameters that can be tuned to improve the filter s performance; these parameters correspond to the covariance of the system and measurement noise variables. The filter is also strongly influenced by the initial values of the states and the error covariance matrix. The filter is demonstrated using numerically simulated data for a rotor-bearing system with two identical bearings, which reduces the number of unknown linear dynamic coefficients to eight. The filter estimates for the direct damping coefficients and all four stiffness coefficients correlated well with actual values, whereas the estimates for the cross-coupled damping coefficients were the least accurate.

IUTAM Symposium on Emerging Trends in Rotor Dynamics

Author : K. Gupta
Publisher : Springer Science & Business Media
ISBN 13 : 9400700202
Total Pages : 558 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis IUTAM Symposium on Emerging Trends in Rotor Dynamics by : K. Gupta

Download or read book IUTAM Symposium on Emerging Trends in Rotor Dynamics written by K. Gupta and published by Springer Science & Business Media. This book was released on 2011-01-06 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotor dynamics is an important branch of dynamics that deals with behavior of rotating machines ranging from very large systems like power plant rotors, for example, a turbogenerator, to very small systems like a tiny dentist’s drill, with a variety of rotors such as pumps, compressors, steam/gas turbines, motors, turbopumps etc. as used for example in process industry, falling in between. The speeds of these rotors vary in a large range, from a few hundred RPM to more than a hundred thousand RPM. Complex systems of rotating shafts depending upon their specific requirements, are supported on different types of bearings. There are rolling element bearings, various kinds of fluid film bearings, foil and gas bearings, magnetic bearings, to name but a few. The present day rotors are much lighter, handle a large amount of energy and fluid mass, operate at much higher speeds, and therefore are most susceptible to vibration and instability problems. This have given rise to several interesting physical phenomena, some of which are fairly well understood today, while some are still the subject of continued investigation. Research in rotor dynamics started more than one hundred years ago. The progress of the research in the early years was slow. However, with the availability of larger computing power and versatile measurement technologies, research in all aspects of rotor dynamics has accelerated over the past decades. The demand from industry for light weight, high performance and reliable rotor-bearing systems is the driving force for research, and new developments in the field of rotor dynamics. The symposium proceedings contain papers on various important aspects of rotor dynamics such as, modeling, analytical, computational and experimental methods, developments in bearings, dampers, seals including magnetic bearings, rub, impact and foundation effects, turbomachine blades, active and passive vibration control strategies including control of instabilities, nonlinear and parametric effects, fault diagnostics and condition monitoring, and cracked rotors. This volume is of immense value to teachers, researchers in educational institutes, scientists, researchers in R&D laboratories and practising engineers in industry.

Rotordynamics of Turbomachinery

Author : John M. Vance
Publisher : John Wiley & Sons
ISBN 13 : 9780471802587
Total Pages : 404 pages
Book Rating : 4.8/5 (25 download)

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Book Synopsis Rotordynamics of Turbomachinery by : John M. Vance

Download or read book Rotordynamics of Turbomachinery written by John M. Vance and published by John Wiley & Sons. This book was released on 1991-01-16 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the rotordynamic considerations that are important to the successful design or troubleshooting of a turbomachine. Shows how bearing design, fluid seals, and rotor geometry affect rotordynamic behavior (vibration, shaft whirling, bearing loads, and critical speeds), and describes two successful computational methods for rotordynamic analysis in terms that can be understood by practicing engineers. Gives descriptive accounts of the state of the art in several areas of the field and presents important mathematical or computational concepts, describing equations and formulas in physical terms for better understanding. Also offers tips for troubleshooting unstable machines and provides practical interpretations of vibration measurements.

Rotordynamics of Gas-Lubricated Journal Bearing Systems

Author : Krzysztof Czolczynski
Publisher : Springer Science & Business Media
ISBN 13 : 1461215188
Total Pages : 156 pages
Book Rating : 4.4/5 (612 download)

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Book Synopsis Rotordynamics of Gas-Lubricated Journal Bearing Systems by : Krzysztof Czolczynski

Download or read book Rotordynamics of Gas-Lubricated Journal Bearing Systems written by Krzysztof Czolczynski and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: A discussion of models for the behaviour of gas bearings, particularly of the aspects affecting the stability of the system. The text begins with a discussion of the mathematical models, identifying the stiffness and damping coefficients, and describing the behaviour of the models in unstable regions. It then turns to apply these results to bearings: static characteristics and stability of various rotor systems and an extensive discussion of air rings.

Fluid Film Bearing Dynamic Coefficients and Their Application to Structural Finite Element Models

Author :
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Fluid Film Bearing Dynamic Coefficients and Their Application to Structural Finite Element Models by :

Download or read book Fluid Film Bearing Dynamic Coefficients and Their Application to Structural Finite Element Models written by and published by . This book was released on 2003 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review of methods currently employed for modeling static and dynamic characteristics of fluid film bearings is provided. In nearly all cases, the literature discusses the use of dynamic coefficients for low-order rotor-dynamics models in which a single stiffness and damping matrix is used to connect an individual rotor node to an individual stator/bearing node along the shaft centerline. The focus of the present work is on developing dynamic coefficients for high-order structural finite element models, which use a distribution of the coefficients over the journal circumference. While the methods presented here are applicable to many bearing types, the focus is on the most common bearing, the plain and tilting pad bearing designs. A numerical study is provided to show the importance of properly implementing the bearing coefficients by comparing the results for two methods of coefficient implementation for a rotor model. The results show differences in rotor-to-stator transfer accelerance, resonance frequencies, and damping levels.

Vibration and Wear in High Speed Rotating Machinery

Author : Júlio M. Montalvão e Silva
Publisher : Springer Science & Business Media
ISBN 13 : 940091914X
Total Pages : 830 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Vibration and Wear in High Speed Rotating Machinery by : Júlio M. Montalvão e Silva

Download or read book Vibration and Wear in High Speed Rotating Machinery written by Júlio M. Montalvão e Silva and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Study Institute on Vibration and Wear Damage in High Speed Rotating Machinery, Tróia, Sebútal, April 10-22, 1989

Machinery Vibration and Rotordynamics

Author : John M. Vance
Publisher : John Wiley & Sons
ISBN 13 : 0470916079
Total Pages : 448 pages
Book Rating : 4.4/5 (79 download)

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Book Synopsis Machinery Vibration and Rotordynamics by : John M. Vance

Download or read book Machinery Vibration and Rotordynamics written by John M. Vance and published by John Wiley & Sons. This book was released on 2010-06-17 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: An in-depth analysis of machine vibration in rotating machinery Whether it's a compressor on an offshore platform, a turbocharger in a truck or automobile, or a turbine in a jet airplane, rotating machinery is the driving force behind almost anything that produces or uses energy. Counted on daily to perform any number of vital societal tasks, turbomachinery uses high rotational speeds to produce amazing amounts of power efficiently. The key to increasing its longevity, efficiency, and reliability lies in the examination of rotor vibration and bearing dynamics, a field called rotordynamics. A valuable textbook for beginners as well as a handy reference for experts, Machinery Vibration and Rotordynamics is teeming with rich technical detail and real-world examples geared toward the study of machine vibration. A logical progression of information covers essential fundamentals, in-depth case studies, and the latest analytical tools used for predicting and preventing damage in rotating machinery. Machinery Vibration and Rotordynamics: Combines rotordynamics with the applications of machinery vibration in a single volume Includes case studies of vibration problems in several different types of machines as well as computer simulation models used in industry Contains fundamental physical phenomena, mathematical and computational aspects, practical hardware considerations, troubleshooting, and instrumentation and measurement techniques For students interested in entering this highly specialized field of study, as well as professionals seeking to expand their knowledge base, Machinery Vibration and Rotordynamics will serve as the one book they will come to rely upon consistently.

Machinery Vibration and Rotordynamics

Author : John M. Vance
Publisher : John Wiley & Sons
ISBN 13 : 0470916079
Total Pages : 389 pages
Book Rating : 4.4/5 (79 download)

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Book Synopsis Machinery Vibration and Rotordynamics by : John M. Vance

Download or read book Machinery Vibration and Rotordynamics written by John M. Vance and published by John Wiley & Sons. This book was released on 2010-06-17 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: An in-depth analysis of machine vibration in rotating machinery Whether it's a compressor on an offshore platform, a turbocharger in a truck or automobile, or a turbine in a jet airplane, rotating machinery is the driving force behind almost anything that produces or uses energy. Counted on daily to perform any number of vital societal tasks, turbomachinery uses high rotational speeds to produce amazing amounts of power efficiently. The key to increasing its longevity, efficiency, and reliability lies in the examination of rotor vibration and bearing dynamics, a field called rotordynamics. A valuable textbook for beginners as well as a handy reference for experts, Machinery Vibration and Rotordynamics is teeming with rich technical detail and real-world examples geared toward the study of machine vibration. A logical progression of information covers essential fundamentals, in-depth case studies, and the latest analytical tools used for predicting and preventing damage in rotating machinery. Machinery Vibration and Rotordynamics: Combines rotordynamics with the applications of machinery vibration in a single volume Includes case studies of vibration problems in several different types of machines as well as computer simulation models used in industry Contains fundamental physical phenomena, mathematical and computational aspects, practical hardware considerations, troubleshooting, and instrumentation and measurement techniques For students interested in entering this highly specialized field of study, as well as professionals seeking to expand their knowledge base, Machinery Vibration and Rotordynamics will serve as the one book they will come to rely upon consistently.

Proceedings of the 6th National Symposium on Rotor Dynamics

Author : J. S. Rao
Publisher : Springer Nature
ISBN 13 : 9811557012
Total Pages : 605 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis Proceedings of the 6th National Symposium on Rotor Dynamics by : J. S. Rao

Download or read book Proceedings of the 6th National Symposium on Rotor Dynamics written by J. S. Rao and published by Springer Nature. This book was released on 2020-10-13 with total page 605 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents select papers presented during the 6th National Symposium on Rotor Dynamics, held at CSIR-NAL, Bangalore, and focuses on the latest trends in rotor dynamics and various challenges encountered in the design of rotating machinery. The book is of interest to researchers from mechanical, aerospace, tribology and power industries, engineering service providers and academics.

Turbomachinery Rotordynamics

Author : Dara Childs
Publisher : John Wiley & Sons
ISBN 13 : 9780471538400
Total Pages : 496 pages
Book Rating : 4.5/5 (384 download)

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Book Synopsis Turbomachinery Rotordynamics by : Dara Childs

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.

Handbook of Rotordynamics

Author : Fredric F. Ehrich
Publisher :
ISBN 13 :
Total Pages : 488 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Handbook of Rotordynamics by : Fredric F. Ehrich

Download or read book Handbook of Rotordynamics written by Fredric F. Ehrich and published by . This book was released on 1999 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This iteration adds some 50 tables and figures, reflecting new devices and phenomena since the 1992 edition, particularly in the design of rotating machinery. Four chapters cover vibration considerations in design; analytic prediction of rotordynamic response; and balancing of flexible.