Rotor and Structural Dynamics of Turbomachinery: A Practical Guide for Engineers and Scientists (Applied Condition Monitoring (11))

This book provides engineers and scientists with practical fundamentals for turbomachinery design. It presents a detailed analysis of existing procedures for the analysis of rotor and structure dynamics, while keeping mathematical equations to a minimum. Specific terminologies are used for rotors and structures, respectively, allowing the readers to clearly distinguish between the two. Further, the book describes the essential concepts needed to understand rotor failure modes due to lateral and torsional oscillations. It guides the reader from simple single-degree-of-freedom models to the most complex multi-degree-of-freedom systems, and provides useful information concerning steel pedestal stiffness degradation and other structural issues. Fluid-film bearing types and their dynamical behavior are extensively covered and discussed in the context of various turbomachinery applications. The book also discusses shaft alignment and rotor balancing from a practical point of view, providing readers with essential information to help them solve practical problems. As the main body of the book focuses on the diagnostics and description of case studies addressing the most pressing practical issues, together with their successful solutions, it offers a valuable reference guide, helping field engineers manage day-to-day issues with turbomachinery. This book provides engineers and scientists with practical fundamentals for turbomachinery design. It presents a detailed analysis of existing procedures for the analysis of rotor and structure dynamics, while keeping mathematical equations to a minimum.Ӱecific terminologies are used for rotors and structures, respectively, allowing the readers to clearly distinguish between the two.Ƶrther, the book describes the essential concepts needed to understand rotor failure modes due to lateral and torsional oscillations. It guides the reader from simple single-degree-of-freedom models to the most complex multi-degree-of-freedom systems, and provides useful information concerning steel pedestal stiffness degradation and other structural issues. Fluid-film bearing types and their dynamical behavior are extensively covered and discussed in the context of various turbomachinery applications. The book also discusses shaft alignment and rotor balancing from a practical point of view, providing readers with essential information to help them solve practical problems.s the main body of the book focuses on the diagnostics and description of case studies addressing the most pressing practical issues, together with their successful solutions, it offers a valuable reference guide, helping field engineers manage day-to-day issues with turbomachinery

By: Donald E. Bently with Charles T. Hatch.  Edited by: Bob Grissom

OVERVIEW

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.

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Maximize uptime! Sharpen your machinery diagnostic and troubleshooting skills.-- An up-to-date, hands-on single-source diagnostic guide for process machinery.-- How to use software tools to evaluate machinery behavior.-- 45 detailed case studies describing problem definition, investigation, analytical technique and corrective solutions.This is a single source reference for process machinery diagnostics and troubleshooting. It includes usable computations, analytical procedures, definitions, fundamental machinery behavior, static and dynamic measurements, data acquisition and processing, data interpretation and field problem-solving techniques.The book begins with fundamental concepts of mechanical motion, and expands these basic models into acceptable simulations of real machines. Steam and gas turbines, gear boxes, centrifugal and reciprocating compressors, motors and generators are each analyzed from multiple perspectives. The text describes common malfunctions, plus unusual excitations and failure mechanisms. It is extensively illustrated, and contains detailed examples with sample calculations -- along with 45 case histories that cover entire scenarios, from problem definition through corrective solutions. "This reference/text demonstrates that the design and geometry of gears, and the measuring and processing of noise and vibration information are logical, and can be investigated without a detailed knowledge of mathematics or complex computations - focusing on problems of design, metrology, development, and troubleshooting when noise and vibration occur."--BOOK JACKET. "Written primarily for industrial engineers who are either buying-in or designing, manufacturing, and inspecting gears and encounter noise trouble or must measure unknown quantities, Gear Noise and Vibration describes the overall path of vibration from mesh to final sound ... suggests ways for making improvements at the most economical stage ... and more."--Jacket "This reference/text demonstrates that the design and geometry of gears, and the measuring and processing of noise and vibration information are logical, and can be investigated without a detailed knowledge of mathematics or complex computations - focusing on problems of design, metrology, development, and troubleshooting when noise and vibration occur.". "Written primarily for industrial engineers who are either buying-in or designing, manufacturing, and inspecting gears and encounter noise trouble or must measure unknown quantities, Gear Noise and Vibration describes the overall path of vibration from mesh to final sound ... suggests ways for making improvements at the most economical stage ... and more."--BOOK JACKET. Examining the fundamentals of machinery diagnostics for those working with rotating machinery, this volume prepares engineers, researchers, and students for the future of rotor dynamics and bearing technology, especially pressurized bearings. Demystifying important concepts in the diagnosis of machinery malfunction, it serves as an essential reference for anyone who works with rotating machinery, from operator to manager and from design engineer to machinery diagnostician. The book features hundreds of full color illustration explaining key concepts, numerous detailed case histories demonstrating actual solutions to machinery problems, and a comprehensive glossary of diagnostic terms. A guide to the application of engineering principles in the diagnosis and correction of malfunction of a wide range of machinery which operates within the heavy process industries. Fifteen chapters discuss dynamic motion, rotor mode shapes, bearings and supports, analytical rotor modeling, transducer and dynamic signal characteristics, data acquisition and processing, common malfunctions, unique behavior, rotor balancing, alignment, maintenance and monitoring, and diagnostic methodology. Annotation c. by Book News, Inc., Portland, Or. Specific, practical guidance for every individual involved with solving process machinery problems. The single source reference for explanations of fundamental machinery behavior, static and dynamic measurements, plus data acquisition, processing and interpretation. A variety of lateral and torsional analytical procedures, and physical tests are presented and discussed. This work demonstrates that the design and geometry of gears and the measuring and processing of noise and vibration information are logical, and can be investigated without a detailed knowledge of mathematics or complex computations. It focuses on problems of design, metrology, development and troubleshooting when noise and vibration occur.