Practical Balancing of Rotating Machinery PDF Download
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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
Author: Derek Norfield
Publisher: Elsevier
ISBN: 0080459382
Category : Technology & Engineering
Languages : en
Pages : 228
Get Book Here
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
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.
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.
Author: John Bernard Wilcox
Publisher:
ISBN:
Category : Balancing of machinery
Languages : en
Pages : 272
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Book Description
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.
Author: Victor Wowk
Publisher: McGraw Hill Professional
ISBN: 9780070719361
Category : Technology & Engineering
Languages : en
Pages : 372
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Book Description
Shows how to use state-of-the-art instrumentation - transducers and fast fourier transform (FFT) specturm analyzers - to monitor machine conditions using the vibration signature.
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.
Author: Donald E. Bently
Publisher: American Society of Mechanical Engineers
ISBN:
Category : Science
Languages : en
Pages : 768
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Book Description
A practical course in the fundamentals of machinery diagnostics for anyone who works with rotating machinery, from operator to manager, from design engineer to machinery diagnostician. This comprehensive book thoroughly explains and demystifies important concepts needed for effective machinery malfunction diagnosis: (A) Vibration fundamentals: vibration, phase, and vibration vectors. (B) Data plots: timebase, average shaft centerline, polar, Bode, APHT, spectrum, trend XY, and the orbit. (C) Rotor dynamics: the rotor model, dynamic stiffness, modes of vibration, anisotropic (asymmetric) stiffness, stability analysis, torsional and axial vibration, and basic balancing. Modern root locus methods (pioneered by Walter R. Evans) are used throughout this book. (D) Malfunctions: unbalance, rotor bow, high radial loads, misalignment, rub and looseness, fluid-induced instability, and shaft cracks. Hundreds of full-color illustrations explain key concepts, and several detailed case studies show how these concepts were used to solve real machinery problems. A comprehensive glossary of diagnostic terms is included.
Author: Clifford Matthews
Publisher: John Wiley & Sons
ISBN: 9781860583445
Category : Technology & Engineering
Languages : en
Pages : 360
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Book Description
This handy reference source, is a companion volume to the author’s Engineers’ Guide to Pressure Equipment. Heavily illustrated, and containing a wealth of useful data, it offers inspectors, engineers, operatives, and those maintaining engineering equipment a one stop everyday package of information. It will be particularly helpful in guiding users through the legislation that regulates this field. Legislation has very important implications for works inspection and in-service inspection of mechanical plant. An Engineers’ Guide to Rotating Equipment is packed with information, technical data, figures, tables and checklists. Details of relevant technical standards, the legislation and Accepted Codes of Practice (AcoPs) published by various bodies such as HSE and SAFed, are provided in addition to a number of website addresses and contact details. COMPLETE CONTENTS: Engineering fundamentals Bending, torsion, and stress Motion and dynamics Rotating machine fundamentals: Vibration, balancing, and noise Machine elements Fluid mechanics Centrifugal pumps Compressors and turbocompressors Prime movers Draught plant Basic mechanical design Materials of construction The machinery directives Organisations and associations.
Author: Victor Wowk
Publisher: McGraw-Hill Professional Publishing
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 344
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Book Description
Shows you how to implement simple methods to mass balance without expensive instruments, and explores such topics as the vestor mathematics of balancing, mass centering, index balancing, and designs for balance weights. It features several illustrations, real-world case studies, and worked-out problems.
