STRUCTURAL DYNAMICS OF TURBO-MACHINES presents a detailed and comprehensive treatment of structural vibration evaluation of turbo-machines. Starting with fundamentals of the theory of vibration as related to various aspects of rotating machines, the dynamic analysis procedures of a broad spectrum of turbo-machines is covered. An in-depth procedure for analyzing the torsional and flexural oscillations of the components and of the rotor-bearing system is presented. The latest trends in design and analysis are presented, chief among them: * Blade and coupled disk-blade modes of vibration * Dynamic instability, non-linear phenomena, their causes and consequences * Methods to control rotor-to-stator clearance and improving operating efficiency * Experimental techniques and analytical correlation with variables ranging from blade flutter to bearing orbital trajectory * Fatigue failures arising from thermal ratcheting and cyclical operating loads * Material characteristics and requirements Growth in machine operating parameters and user expectations require exacting consideration of dynamic characteristics. State-of-the-art technology is required to understand blade dynamics and rotating system vibrations. Vibration measurement is an important tool in diagnostics. This book develops methods to understand vibrations and correct major causes of related problems. Emphasis is placed on practical modeling methods, interpreting results and obtaining realistic solutions. Analysis as a problem solving tool is the focus.

� propos de l?auteur

A S Rangwala received a Master of Science degree in Mechanical Engineering from Drexel University, Philadelphia, and obtained his Master of Science degree in Industrial Engineering from University of Cincinnati. He has worked for thirty-five years in the field of Structural Dynamics on Compressors and gas turbines as applicable to aircraft engines, and steam turbines and generators for power plant applications. Mr Rangwala has written several books, papers and reports on all facets of machinery system and component dynamics. He has worked at General Electric Company's Aircraft Engines Group in Cincinnati, OH and Lynn, Massachusetts and at Large Steam Turbines Department, Schenectady, NY. He has also worked at Siemens- Westinghouse Power Corporation in Orlando. He now works as an International Consultant and teaches short course for practising engineers on structural vibrations of rotating and reciprocating machinery. He has also been an adjunct professor at Cincinnati State Technical College.

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