Balancing of Rigid and Flexible Rotors

Balancing of Rigid and Flexible Rotors PDF Author: Neville F. Rieger
Publisher:
ISBN:
Category : Balancing of machinery
Languages : en
Pages : 632

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Book Description

Balancing of Rigid and Flexible Rotors

Balancing of Rigid and Flexible Rotors PDF Author: Neville F. Rieger
Publisher:
ISBN:
Category : Balancing of machinery
Languages : en
Pages : 632

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Book Description


Balancing of High-Speed Machinery

Balancing of High-Speed Machinery PDF Author: Mark S. Darlow
Publisher: Springer Science & Business Media
ISBN: 1461236568
Category : Science
Languages : en
Pages : 197

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Book Description
Modern rotating machinery, particularly turbomachinery, is frequently being designed to operate at higher speeds than in the past. Consequently, there is an increased need to balance high-speed rotors. The purpose of this book is to provide the engineering student or practicing engineer with a single, complete reference on high-speed rotor balancing. To this end, a detailed analytical background and practical application procedures are presented for each of the principal high-speed rotor balancing methods, i.e. modal balancing, influence coefficient balancing and the Unified Balancing Approach. This information is supplemented and supported through a presentation of the theoretical development of synchronous rotor vibration and a brief overview of rigid rotor balancing techniques and machines. This is the first time this material is available in a single, concise volume, together with detailed descriptions of application procedures.

Practical Balancing of Rotating Machinery

Practical Balancing of Rotating Machinery PDF Author: Derek Norfield
Publisher: Elsevier
ISBN: 0080459382
Category : Technology & Engineering
Languages : en
Pages : 228

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Book Description
Rotating machinery (eg pumps, motors, compressors) is normally manufactured to precise measurements but there comes a point when the costs of manufacture mean that further precision is not cost-effective and thus any slight imbalance inherent in the machine will need to be attended to after manufacture. When such machinery is in operation, often at very high speeds of thousands of revs per minute, any imbalance will set up vibration and often noise. In addition, such imbalance will cause extra wear and loss of efficiency in the machine. The answer is to balance the affected parts of the machine so that it operates smoothly and efficiently.This book is a practical account of such balancing techniques e.g how to balance a rotor, how to set up and verify performance of a balancing machine, and procedures for on-site balancing. In addition, other common causes of vibration will be covered e.g. misalignment, bad bearings and looseness.This book is the distillation of a successful course run by the author and developed over 20 years. University engineering departments do not teach balancing techniques beyond the very basic, and there is a need for educators and engineers to have a practical book available on the topic.·A practical book which will help the reader understand the importance of balance in today's high technology world·Outlines the history of dynamic balancing and other vibration reduction techniques·Profusely illustrated throughout

Dynamics of Rotating Systems

Dynamics of Rotating Systems PDF Author: Giancarlo Genta
Publisher: Springer Science & Business Media
ISBN: 038728687X
Category : Technology & Engineering
Languages : en
Pages : 674

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Book Description
Provides an up-to-date review of rotor dynamics, dealing with basic topics as well as a number of specialized topics usually available only in journal articles Unlike other books on rotordynamics, this treats the entire machine as a system, with the rotor as just one component

Rotor Systems

Rotor Systems PDF Author: Rajiv Tiwari
Publisher: CRC Press
ISBN: 1351863630
Category : Science
Languages : en
Pages : 1225

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Book Description
The purpose of this book is to give a basic understanding of rotor dynamics phenomena with the help of simple rotor models and subsequently, the modern analysis methods for real life rotor systems. This background will be helpful in the identification of rotor-bearing system parameters and its use in futuristic model-based condition monitoring and, fault diagnostics and prognostics. The book starts with introductory material for finite element methods and moves to linear and non-linear vibrations, continuous systems, vibration measurement techniques, signal processing and error analysis, general identification techniques in engineering systems, and MATLAB analysis of simple rotors. Key Features: • Covers both transfer matrix methods (TMM) and finite element methods (FEM) • Discusses transverse and torsional vibrations • Includes worked examples with simplicity of mathematical background and a modern numerical method approach • Explores the concepts of instability analysis and dynamic balancing • Provides a basic understanding of rotor dynamics phenomena with the help of simple rotor models including modern analysis methods for real life rotor systems.

Dynamics of Rotating Machines

Dynamics of Rotating Machines PDF Author: M. I. Friswell
Publisher: Cambridge University Press
ISBN: 0521850169
Category : Science
Languages : en
Pages : 545

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Book Description
Enables engineers to understand the dynamics of rotating machines, from basic explanations to detailed numerical models and analysis.

Rotor Dynamics

Rotor Dynamics PDF Author: J. S. Rao
Publisher: New Age International
ISBN: 9788122409772
Category : Rotors
Languages : en
Pages : 460

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Book Description
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.

10th International Conference on Vibrations in Rotating Machinery

10th International Conference on Vibrations in Rotating Machinery PDF Author: Institution of Mechanical Engineers
Publisher: Elsevier
ISBN: 085709453X
Category : Technology & Engineering
Languages : en
Pages : 847

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Book Description
This book presents the papers from the 10th International Conference on Vibrations in Rotating Machinery. This conference, first held in 1976, has defined and redefined the state-of-the-art in the many aspects of vibration encountered in rotating machinery. Distinguished by an excellent mix of industrial and academic participation achieved, these papers present the latest methods of theoretical, experimental and computational rotordynamics, alongside the current issues of concern in the further development of rotating machines. Topics are aimed at propelling forward the standards of excellence in the design and operation of rotating machines. - Presents latest methods of theoretical, experimental and computational rotordynamics - Covers current issues of concern in the further development of rotating machines

Vibrations of Rotating Machinery

Vibrations of Rotating Machinery PDF Author: Osami Matsushita
Publisher: Springer
ISBN: 4431554564
Category : Technology & Engineering
Languages : en
Pages : 367

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Book Description
This book opens with an explanation of the vibrations of a single degree-of-freedom (dof) system for all beginners. Subsequently, vibration analysis of multi-dof systems is explained by modal analysis. Mode synthesis modeling is then introduced for system reduction, which aids understanding in a simplified manner of how complicated rotors behave. Rotor balancing techniques are offered for rigid and flexible rotors through several examples. Consideration of gyroscopic influences on the rotordynamics is then provided and vibration evaluation of a rotor-bearing system is emphasized in terms of forward and backward whirl rotor motions through eigenvalue (natural frequency and damping ratio) analysis. In addition to these rotordynamics concerning rotating shaft vibration measured in a stationary reference frame, blade vibrations are analyzed with Coriolis forces expressed in a rotating reference frame. Other phenomena that may be assessed in stationary and rotating reference frames include stability characteristics due to rotor internal damping and instabilities due to asymmetric shaft stiffness and thermal unbalance behavior.

Rotordynamics of Turbomachinery

Rotordynamics of Turbomachinery PDF Author: John M. Vance
Publisher: John Wiley & Sons
ISBN: 9780471802587
Category : Technology & Engineering
Languages : en
Pages : 404

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Book Description
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.