10th International Conference on Vibrations in Rotating Machinery

10th International Conference on Vibrations in Rotating Machinery

11-13 September 2012, Imeche London, UK

1st Edition - September 11, 2012

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  • Author: Institution of Mechanical Engineers
  • eBook ISBN: 9780857094537
  • Paperback ISBN: 9780857094520

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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.

Key Features

  • Presents latest methods of theoretical, experimental and computational rotordynamics
  • Covers current issues of concern in the further development of rotating machines

Readership

Mechanical engineers; IMeche members

Table of Contents

  • Keynote Addresses

    Chapter 1: Modelling, dynamic behaviour and diagnostics of cracked rotors

    ABSTRACT

    1 INTRODUCTION

    2 CRACK BREATHING MECHANISM

    3 CRACK PROPAGATION AND SHAPE

    4 IDENTIFICATION OF CRACKS IN ROTORS

    5 CONCLUSIONS

    Chapter 2: Model based signal processing in Smart rotating machines

    ABSTRACT

    1 INTRODUCTION

    2 Detecting Traveling Wave Direction -Multiple Sensors

    3 ORDER TRACKING WITH MULTIPLE SENSORS

    4 ASYMMETRY AND DEFECT DETECTION IN ROTATING ELEMENTS

    5 SUMMARY

    Rotordynamics

    Chapter 3: A full size rotor dynamic test rig for whole engine mechanics of aero engines

    ABSTRACT

    1 INTRODUCTION

    2 ENGINEERING DESIGN OF THE SIMULATOR

    3 SIMULATION TECHNIQUES

    4 PROTOTYPE VALIDATION

    5 Conclusion

    Chapter 4: Dynamic analysis of a harmonically excited on-board rotor-bearing system

    ABSTRACT

    1 INTRODUCTION

    2 ANALYTICAL MODELING OF AN ON-BOARD ROTOR-BEARING SYSTEM

    3 NUMERICAL EXAMPLES AND DISCUSSION

    4 CONCLUSIONS

    Chapter 5: Vibration analysis of a shafting system for a marine diesel generator set including dynamic characteristics between shell and housing of generator bearing

    ABSTRACT

    1 INTRODUCTION

    2 DESCRIPTION OF ROTOR SYSTEM FOR MARINE DIESEL GENERATOR SET

    3 MODELLING FOR ROTORDYNAMIC ANALYSIS

    4 COMPARISON OF EXPERIMENT RESULTS AND COMPUTATIONAL CALCULATION RESULTS

    5 EFFECT OF GAP BETWEEN BEARING SHELL AND HOUSING

    6 Conclusions

    Chapter 6: An investigation into the dynamic response of a squeeze-film damped twin-shaft test rig

    ABSTRACT

    1 INTRODUCTION

    2 TEST RIG

    3 OVERVIEW OF COMPUTATIONAL METHODS

    4 DISCUSSION OF RESULTS

    5 CONCLUSIONS

    Chapter 7: Identification of foundations in rotating machinery using modal parameters

    ABSTRACT

    2 INTRODUCTION

    3 THEORY

    4 NUMERICAL EXPERIMENTS

    5 RESULTS AND DISCUSSION

    6 SUMMARY OF CONCLUSIONS

    Chapter 8: On the determination of bearing support pedestal conditions using shaker testing

    ABSTRACT

    INTRODUCTION

    SHAKER TESTING PROCESS

    EXAMPLE 1: LP TURBINE SYSTEM WITH VINTAGE SHRUNK-ON DISC DESIGN

    HOW TO ASSESS THE ACCEPTABILITY OF THE MEASURED FREQUENCIES

    BEARING SUPPORT STIFFNESS EVALUATION

    MEASUREMENT ERRORS

    STATIC AND DYNAMIC BEARING PEDESTAL STIFFNESS DEFINITION

    ROTOR DYNAMIC MODELS FOR RIGID SUPPORTS

    ROTOR DYNAMIC MODELS WITH OIL-FILM AND BEARING SUPPORT CHARACTERISTICS

    EXAMPLE 2: ANOTHER VINTAGE DESIGN OF LP TURBINE SYSTEM

    IDENTIFICATION OF RELATIVE STRENGTHS OF SIMILAR PEDESTAL STRUCTURES BY SHAKER TESTING

    RESULTS AND DISCUSSIONS

    CONCLUSIONS AND RECOMMENDATIONS

    ACKNOWLEDGEMENTS

    Chapter 9: Axial and radial dynamics of rotors on electrodynamic bearings

    ABSTRACT

    1 INTRODUCTION

    2 RADIAL EDB MODELLING

    3 AXIAL EDB MODELLING

    4 UNIFIED MODELLING

    5 CONCLUSIONS

    Chapter 10: Model based design of a rotor supported by radial electrodynamic bearings

    ABSTRACT

    1 INTRODUCTION

    2 TEST RIG DESIGN

    3 EXPERIMENTAL VALIDATION

    4 CONCLUSIONS

    Cracks

    Chapter 11: Acoustic emission for the detection of subsurface cracking in bearing condition monitoring

    ABSTRACT

    1 INTRODUCTION

    2 EQUIPMENT AND TEST COMPONENTS

    3 DATA ACQUISITION AND HANDLING

    4 RESULTS

    5 DISCUSSION

    6 CONCLUSIONS

    Chapter 12: Finite element vibration analysis of a rotating shaft system with an open crack by the harmonic excitation

    ABSTRACT

    1 INTRODUCTION

    2 SHAFT WITH AN OPEN CRACK

    3 FINITE ELEMENT MODEL OF THE SHAFT WITH AN OPEN CRACK

    4 ANALYSIS OF FORCED VIBRATION BY HARMONIC EXCITATION

    5 EXPERIMENTAL SYSTEM

    6 COMPARISON WITH THE EXPERIMENT

    7 CONCLUSION

    8 ACKNOWLEDGEMENT

    Chapter 13: On the effects of transverse annular cracks in rotating machines

    ABSTRACT

    1 INTRODUCTION

    2 CASE STUDY

    3 CRACK PERIODIC CLOSURE

    4 VALIDATION OF THE THEORETICAL RESULTS

    5 CONCLUSIONS

    Blades

    Chapter 14: 3D Blade root shape optimization

    ABSTRACT

    1 INTRODUCTION

    2 BASE LINE BLADE MODEL

    3 SHAPE VARIABLES

    4 DESIGN OF EXPERIMENTS (DOE)

    5 APPROXIMATION MODELS

    6 OPTIMIZATION

    7 CONCLUSION

    8 ACKNOWLEDGEMENTS

    Chapter 15: Analysis of LP steam turbine blade vibrations: experimental results and numerical simulations

    ABSTRACT

    1 INTRODUCTION

    2 DESCRIPTION OF THE BLADE ROW

    3 IN-FIELD RESULTS

    4 NEW LAST STAGE BLADE DESIGN

    5 MEASUREMENT RESULTS

    6 CONCLUSIONS

    7 ACKNOWLEDGEMENTS

    Chapter 16: Semi-automatic mode naming methodology to classify impeller mode families

    ABSTRACT

    1 INTRODUCTION

    2 METHODOLOGY

    3 EXAMPLE OF APPLICATION

    4 CONCLUSIONS

    5 ACKNOWLEDGEMENTS

    Chapter 17: A method for establishing the uncertainty levels for aero-engine blade tip amplitudes extracted from blade tip timing data

    ABSTRACT

    1 INTRODUCTION

    2 BTT DATA PROCESSING

    3 BTT UNCERTAINTY EXTRACTION METHOD

    4 DISCUSSION

    5 CONCLUSIONS

    Chapter 18: Non-contact methods of sensing vibrations of turbine blades

    ABSTRACT

    1 THE CONCEPT OF THE BLADE VIBRATION MONITORING SYSTEM

    2 NON-CONTACT SENSORS OF BLADE VIBRATIONS AND DISPLACEMENTS

    3 MAGNETOELECTRIC SENSORS

    4 CONCLUSIONS

    5 ACKNOWLEDGEMENTS

    Chapter 19: Estimation of turbomachinery blade vibrations from tip-timing data

    ABSTRACT

    1 INTRODUCTION TO TIP-TIMING MEASURING TECHNIQUE

    2 MINIMUM VARIANCE SPECTRAL ESTIMATOR (MVSE), PRINCIPLE AND LIMITS

    3 ADDITIONAL METHODS EXPLORED

    4 IMPLEMENTATION OF ADDITIONAL METHODS ON A NUMERICAL EXAMPLE

    5 REAL TEST CASE APPLICATION

    6 CONCLUSIONS

    Chapter 20: FSI-based forced response analyses of a mistuned high pressure compressor blisk

    ABSTRACT

    1 INTRODUCTION

    2 THEORY

    3 NUMERICAL STUDY

    4 RESULTS

    5 CONCLUSION

    6 ACKNOWLEDGEMENTS

    Chapter 21: The problem of complex shape tracking in a Campbell Diagram or how to overcome crossing/veering phenomena

    ABSTRACT

    1 INTRODUCTION

    2 BACKGROUND EQUATIONS

    3 A NEW CRITERION FOR ROTOR MODE SHAPE TRACKING

    4 INDUSTRIAL APPLICATION

    5 OVERCOMING VEERING/CROSSING PHENOMENA

    6 CONCLUSION

    Chapter 22: On the comparison of possibilistic and probabilistic methods for the determination of the worst-case response of mistuned bladed disks

    ABSTRACT

    1 INTRODUCTION

    2 METHODOLOGY

    3 NUMERICAL EXAMPLES

    4 RESULTS AND DISCUSSIONS

    5 CONCLUSIONS

    Chapter 23: Forced response prediction of a mistuned bladed disk in the presence of aeroelastic coupling and model uncertainties

    ABSTRACT

    1 INTRODUCTION

    2 THEORETICAL BACKGROUND

    3 FORCED RESPONSE

    4 SENSITIVITY ANALYSIS

    5 CONCLUSION

    6 ACKNOWLEDGEMENTS

    Chapter 24: Inter-slip damping of twisted blades in opposed bundles under rotation

    ABSTRACT

    1 INTRODUCTION

    2 FE MODEL OF TRIPLE-BLADE-BUNDLE WITH FRICTION COUPLINGS

    3 NUMERICAL RESULTS OF FORCED RESONANT VIBRATION

    4 MODEL ANALYSIS OF A SINGLE BLADE

    5 DESCRIPTION OF DYNAMIC TESTS UNDER ROTATION

    6 RESULTS

    7 CONCLUSIONS

    8 ACKNOWLEDGEMENTS

    Chapter 25: An improved simulation method for blade-casing interaction phenomena

    ABSTRACT

    1 INTRODUCTION

    2 CORRECTION TO CONTACT MODEL

    3 RESULTS FOR A REAL BLADE MODEL

    4 STUDY OF A SIMPLIFIED 2DOF BLADE MODEL

    5 CONCLUSIONS AND FURTHER WORK

    6 ACKNOWLEDGEMENTS

    Chapter 26: Simulation of the dynamic behaviour of a group of blades with friction contacts

    ABSTRACT

    1 INTRODUCTION

    2 THE MODEL

    3 FEATURES OF THE TEST RIG

    4 NON-LINEAR STATIC BEHAVIOUR

    5 LINEAR DYNAMIC BEHAVIOUR WITH FRICTIONLESS CONTACT

    6 NON-LINEAR DYNAMIC BEHAVIOUR WITH FRICTION CONTACT

    7 CONCLUSIONS

    8 ACKNOWLEDGEMENTS

    Chapter 27: Vibration characteristics of a continuous cover blade structure with friction contact surfaces of a steam turbine

    ABSTRACT

    1 INTRODUCTION

    2 ANALYSIS METHOD

    3 RESULTS AND DISCUSSION

    4 CONCLUSION

    Rotordynamics Balancing

    Chapter 28: An extended field balancing procedure for flexible rotors fully levitated by active magnetic bearings

    ABSTRACT

    1 INTRODUCTION

    2 IDENTIFICATION PROCEDURE FOR RESIDUAL UNBALANCES

    3 NUMERICAL MODEL OF THE ROTOR-AMB SYSTEM

    4 NUMERICAL BENCHMARK OF PROPOSED BALANCING PROCEDURE

    5 EXPERIMENTAL VERIFICATION

    6 CONCLUSIONS

    ACKNOWLEDGEMENTS

    Chapter 29: Convergence on unbalance identification process based on genetic algorithm applied to rotating machinery

    ABSTRACT

    1 INTRODUCTION

    2 METHODOLOGY

    3 RESULTS AND DISCUSSION

    4 CONCLUSION

    5 ACKNOWLEDGEMENTS

    Chapter 30: Observer design for rotating shafts excited by unbalance

    ABSTRACT

    1 INTRODUCTION

    2 MODELLING AND CONTROLLER DESIGN

    3 THEORY

    4 APPLICATION TO A ROTOR TEST RIG MODEL

    5 CONCLUSION

    ACKNOWLEDGEMENT

    Chapter 31: Use of modal weight sets for residual modal unbalance assessment of high speed balance quality of flexible rotors

    ABSTRACT

    1 INTRODUCTION

    2 METHOD OF RMU EVALUATION WITH MODAL WEIGHT SETS

    3 COMPARISON OF RMU VALUES OBTAINED WITH MODAL WEIGHT SETS AND IN SINGLE PLANES FOR FACTORY FINAL BALANCE VIBRATION LIMITS

    4 RMU VALUES OBTAINED WITH MODAL WEIGHT SETS FOR FACTORY FINAL BALANCE VIBRATION LIMITS

    5 CONCLUSION

    Ambs and Control

    Chapter 32: Experimental assessment of a new fuzzy controller applied to a flexible rotor supported by Active Magnetic Bearings

    ABSTRACT

    1 INTRODUCTION

    2 EXPERIMENTAL APPARATUS

    3 DETAILED MODEL

    4 CONTROL STRATEGIES

    5 EXPERIMENTAL RESULTS

    6 CONCLUSIONS

    Chapter 33: Self identification algorithm for the autonomous control of rotating systems

    ABSTRACT

    1 INTRODUCTION

    2 THE D-DECOMPOSITION APPLIED TO PD CONTROLLERS

    3 THE SELF-IDENTIFICATION ALGORITHM

    4 TEST APPARATUS

    5 EXPERIMENTAL RESULTS

    6 CONCLUSION

    7 ACKNOWLEDGEMENT

    Chapter 34: Numerical and experimental identification of the static characteristics of a combined Journal-Magnetic bearing: Smart Integrated Bearing

    ABSTRACT

    1 NOMENCLATURE

    2 INTRODUCTION

    3 MAGNETIC ACTUATOR MODELING

    4 EXPERIMENTAL SET-UP

    5 RESULTS

    6 CONCLUSIONS

    7 ACKNOWLEDGMENTS

    Chapter 35: Investigation of the vibration reduction of a flexibly supported Jeffcott rotor damped by semiactive elements working on the principle of squeezing thin layers of normal and magnetorheological oils

    ABSTRACT

    1 INTRODUCTION

    2 THE PROPOSED DAMPING ELEMENT AND ITS MATHEMATICAL MODELLING

    3 THE EQUATION OF MOTION OF THE STUDIED ROTOR SYSTEM

    4 RESULTS OF THE COMPUTATIONAL SIMULATIONS

    5 CONCLUSIONS

    6 ACKNOWLEDGEMENT

    Chapter 36: Modeling, design and control of a flexible rotor supported by active magnetic bearings

    ABSTRACT

    1 INTRODUCTION

    2 CMODELING AND EIGENVALUE ANALYSIS OF A FLEXIBLE ROTOR SYSTEM

    3 CONFIGURATION OF THE TEST RIG

    4 ROTORDYNAMIC ANALYSIS

    5 EXPERIMENTAL VERIFICATION

    6 CONCLUSION

    Chapter 37: Nonlinear vibration analysis of a rotating shaft supported by a repulsive magnetic bearing and vibration suppression using the axial control

    ABSTRACT

    1 INTRODUCTION

    2 MAGNETIC FORCE OF THE REPULSIVE MAGNETIC BEARING

    3 THEORETICAL MODEL

    4 THEORETICAL ANALYSIS

    5 VIBRATION SUPPRESSION USING THE AXIAL DISPLACEMENT CONTROL OF THE MAGNET

    6 EXPERIMENT

    7 CONCLUSION

    Dampers and Seals

    Chapter 38: Rotors supported by elastomer-ring-dampers – experimental and numerical investigations

    ABSTRACT

    1 INTRODUCTION

    2 ELASTOMER BEHAVIOUR

    3 OPTIMISED SHIFT PROCESS

    4 TEST ROTOR

    5 CONCLUSION

    Chapter 39: Experimental techniques for determining rotordynamic coefficients of gas seals: results for short staggered labyrinth seals and comparison with CFD

    ABSTRACT

    1 INTRODUCTION

    2 EXPERIMENTAL SETUP AND TEST PROCEDURE

    3 RESULTS AND DISCUSSION

    4 CONCLUSIONS

    5 ACKNOWLEDGEMENTS

    Chapter 40: Analysis of rotordynamic forces for high inlet pre-swirl rate labyrinth seals

    ABSTRACT

    1 INTRODUCTION

    2 RECENT 3-D NUMERICAL PREDICTION

    3 THE FIRST AND SECOND-ORDER MODELS

    4 ROTORDYNAMIC ANALYSIS OF LABYRINTH SEALS

    5 CONCLUSIONS

    Bearings

    Chapter 41: Investigation of the influence of thermal effects in the dynamic coefficients of a tilting pad journal bearing

    ABSTRACT

    1 INTRODUCTION

    2 METHODOLOGY

    3 RESULTS AND DISCUSSION

    4 CONCLUSION

    5 ACKNOWLEDGEMENTS

    Chapter 42: Train lateral analysis of an offshore gas compressor train experiencing high unbalance sensitivity

    ABSTRACT

    1 INTRODUCTION

    2 MODELING ASPECTS

    3 ANALYSIS RESULTS

    4 CONCLUSIONS AND RECOMMENDATIONS

    Chapter 43: Investigation on the damping characteristics of elastohydrodynamic lubricated point contacts under dynamic loading

    ABSTRACT

    1 INTRODUCTION

    2 THEORATICAL DEVELOPMENT

    3 EHD DAMPING CHARACTERIZATION

    4 REAL BEARING APPLICATION

    5 CONCLUSIONS

    6 ACKNOWLEDGEMENT

    Chapter 44: Local linear approximation for the stiffness characteristics of elastohydrodynamic point contacts

    ABSTRACT

    1 INTRODUCTION

    2 THEORETICAL MODEL

    3 STIFFNESS APPROXIMATION RESULTS

    4 CONCLUSION

    Chapter 45: Experimental results of a novel tilting pad bearing operating in a small high speed turbocharger

    Abstract

    1 Introduction

    2 Background

    3 Description of the Engine Test Stand

    4 Results and Discussion

    5 Conclusions

    6 Acknowledgments

    Chapter 46: Analysis of the influence of hydrodynamic bearings with geometric discontinuities on the dynamic response of a rotating system

    Abstract

    1 Introduction

    2 Methodology

    3 Results and Discussion

    4 Conclusion

    5 Acknowledgements

    Chapter 47: Analysis of the sensitivity to non-linear effects in the oil-film forces of journal bearings

    ABSTRACT

    1 INTRODUCTION

    2 BEARING MODEL

    3 SENSITIVITY ANALYSIS

    4 CONCLUSIONS

    Chapter 48: Analysis of the influence of force and moment dynamic coefficients on lubricated thrust bearings

    ABSTRACT

    1 INTRODUCTION

    2 METHODOLOGY

    3 RESULTS AND DISCUSSION

    4 CONCLUSION

    5 ACKNOWLEDGEMENTS

    Rub, Whirl, Instability

    Chapter 49: Dynamic instability of a rotor-bearing system with two asymmetric disks

    ABSTRACT

    1 INTRODUCTION

    2 FE MODELING OF ROTOR-BEARING SYSTEM WITH TWO ASYMMETRICAL DISKS

    3 DYNAMIC INSTABILITY ANALYSIS

    4 COMPUTATIONS AND DISCUSSIONS

    5 CONCLUSIONS

    Chapter 50: Non-linear fluid bearing stability analysis in large high-speed motors and generators

    ABSTRACT

    1 INTRODUCTION

    2 THEORY

    3 APPLICATIONS AND RESULTS

    4 SIMULATION OF FIELD VIBRATION

    CONCLUSION

    Chapter 51: Unique analytical model improves understanding of violent dynamic behaviour of advanced oilfield rotary steerable drilling systems

    ABSTRACT

    1 INTRODUCTION

    2 THEORY

    3 APPLICATION

    4 RESULTS

    5 IMPROVEMENTS

    6 CONCLUSION

    Chapter 52: Novel detection system improves understanding of backwards whirl and aids parameter optimization for advanced oilfield Rotary Steerable Drilling Systems

    ABSTRACT

    1 INTRODUCTION

    2 STATEMENT OF THEORY AND DEFINITIONS

    3 DESCRIPTION AND APPLICATION OF EQUIPMENT AND PROCESSES

    4 PRESENTATION OF DATA AND RESULTS

    5 CASE STUDIES

    6 CONCLUSIONS

    Chapter 53: Effect of contact parameter uncertainties of the dynamic behaviour of rubbing cyclic assemblies

    ABSTRACT

    1 INTRODUCTION

    2 THEORETICAL DEVELOPMENTS

    3 APPLICATION

    4 CONCLUSION

    Chapter 54: An analysis of rotor-stator interaction

    ABSTRACT

    1 INTRODUCTION

    2 SDOF WITH TWO STOP-ENDS

    3 THREE-DISKS ROTOR WITH ONE CONTACT

    4 CONCLUSION

    5 ACKOWLEDGEMENTS

    Chapter 55: Dynamical analysis of a gyroscopic exercise tool considering collision and slide between the rotor and the case

    ABSTRACT

    1 INTRODUCTION

    2 THEORETICAL MODEL

    3 MOTION PATTERNS WITH PRECESSION

    4 CONCLUSION

    Chapter 56: Stability and bifurcation analysis of a flexible rotor-bearing system by numerical continuation

    ABSTRACT

    1 INTRODUCTION

    2 NONLINEAR DYNAMIC MODEL OF A SYMMETRICAL FLEXIBLE ROTOR

    3 BIFURCATION ANALYSIS BY NUMERICAL CONTINUATION

    4 RESULTS

    5 CONCLUSION

    Condition Monitoring

    Chapter 57: JSME v_BASE activities and some troubleshooting case studies of rotating machinery

    ABSTRACT

    1 INTRODUCTION

    2 JSME v_BASE COMMITTEE

    3 FORMAT OF CASE STUDY REPORT

    4 CASE STUDIES (FORCED VIBRATION)

    5 CASE STUDIES (SELF-EXCITED VIBRATION)

    6 DISCUSSION

    7 CONCLUSIONS

    8 ACKNOWLEDGEMENTS

    Chapter 58: Condition monitoring of rotating machines using on-shaft vibration measurement

    ABSTRACT

    1 INTRODUCTION

    2 TEST RIG

    3 PROPOSED METHOD FOR FAULTS CLASSIFICATION

    4 FAULTS SIMULATION AND EXPERIMENTS

    5 DATA ANALYSIS AND RESULTS

    6 CONCLUSION

    Chapter 59: Neural network based diagnosis of mechanical faults in IC engines

    ABSTRACT

    1 INTRODUCTION

    2 SIGNAL PROCESSING AND FEATURE EXTRACTION

    3 FEATURE SELECTION

    4 BUILDING OF THE ANNS

    5 RESULTS OF THE ANNS

    6 CONCLUSION

    ACKNOWLEDGEMENTS

    Diagnostics and Faults - Fault Detection

    Chapter 60: Anomaly detection of rolling elements using fuzzy entropy and similarity measures

    ABSTRACT

    1 INTRODUCTION

    2 FUZZY ENTROPY AND SIMILARITY MEASURE

    3 FEATURE EXTRACTION AND COMPUTATION

    4 EXPERIMENTAL RESULTS AND DISCUSSION

    5 CONCLUDING REMARKS AND FUTURE WORKS

    Chapter 61: Fault identification of rolling element bearings from vibration signals: an application of Kalman and H∞ Filters

    ABSTRACT

    1 INTRODUCTION

    2 ANALYSIS

    3 RESULTS AND DISCUSSION

    4 CONCLUSION

    Chapter 62: Identification of multiple fault parameters in a flexible rotor-bearing-coupling system based on forced responses

    ABSTRACT

    1 INTRODUCTION

    2 MODEL DESCRIPTION AND IDENTIFICATION ALGORITHM

    3 DEVELOPMENT OF IDENTIFICATION ALGORITHM

    4 RESULTS AND DISCUSSIONS

    5 CONCLUSION

    APPENDIX A COUPLING MATRICES

    Chapter 63: Compensating for speed variation by order tracking with and without a tacho signal

    ABSTRACT

    1 INTRODUCTION

    2 PHASE DEMODULATION AND ANGULAR RESAMPLING

    3 COMPENSATING FOR SPEED VARIATIONS

    4 IMPROVEMENT BY FURTHER ITERATION

    5 CONCLUSION

    Electrical Machines

    Chapter 64: FEM-based vibration analysis of a soft mounted two-pole induction motor regarding electromagnetic excitation due to static rotor eccentricity

    ABSTRACT

    1 INTRODUCTION

    2 ELECTROMAGNETIC FORCES

    3 DATA OF THE ANALYZED MOTOR

    4 FINITE ELEMENT MODEL

    5 NATURAL VIBRATION ANALYSIS

    6 FORCED VIBRATION ANALYSIS

    6.1 Boundary conditions

    6.2 Relative shaft displacements in the sleeve bearing housings

    6.3 Bearing housing vibrations

    6.4 Evaluation of the vibration behavior

    7 CONCLUSION

    Chapter 65: Analytical-computational approach to dynamic investigation of the electro-mechanical coupling effects in the rotating systems driven by asynchronous motors

    ABSTRACT

    1 INTRODUCTION

    2 MODELLING OF THE ELECTROMECHANICAL SYSTEM

    3 SOLUTION OF THE PROBLEM

    4 COMPUTATIONAL EXAMPLES

    5 FINAL REMARKS

    Chapter 66: Modeling two-pole cage induction machine equipped with embedded force actuator

    ABSTRACT

    1 INTRODUCTION

    2 MACHINE TO BE MODELED

    3 DERIVING THE MODEL

    4 FREQUENCY RESPONSE

    5 MEASUREMENT TECHNIQUES

    6 RESULTS

    7 CONCLUSIONS

    ACKNOWLEDGMENT

    Chapter 67: Microvibration modelling and testing of a satellite reaction wheel assembly

    ABSTRACT

    1 INTRODUCTION

    2 RWA MODELLING

    3 RWA DISTURBANCE TEST

    4 MODAL VALIDATION

    5 CONCLUSION

    6. ACKNOWLEDGEMENT

    Torsional Vibration

    Chapter 68: Torsional vibration of machines with gear errors

    ABSTRACT

    1 INTRODUCTION

    2 MODELLING THE GEAR SYSTEM

    3 SIMULATED EXAMPLE

    4 CONCLUSIONS

    ACKNOWLEDGEMENTS

    Chapter 69: Calculations of lateral-torsional coupled vibration in AC motor-driven geared rotor system with mode synthesis approach

    ABSTRACT

    1 INTRODUCTION

    2 ROTOR SYSTEM AND DYNAMICS OF ROTOR MODEL

    3 RESULTS OF CALCULATION

    4 CONCLUSIONS

    Chapter 70: Efficient approach for encoder geometry compensation in time interval measurement of torsional vibration

    ABSTRACT

    1 INTRODUCTION

    2 TIM PROCEDURE DESCRIPTION

    3 ENCODER GEOMETRY CHARACTERIZATION AND CORRECTION

    4 TORSIONAL VIBRATION MEASUREMENT SYSTEM

    5 EXPERIMENTAL STUDY

    6 CONCLUSIONS

    Chapter 71: Electro-mechanical interaction in the torsional dynamics of LNG compression trains with LCI variable speed drive

    ABSTRACT

    1 TURBOMACHINERY TORSIONAL ANALYSIS

    1.1 Modal analysis and Reduced Modal Model

    1.2 Open-Loop Analysis vs. Closed-Loop Analysis

    2 POWER ELECTRONICS AND VARIABLE SPEED DRIVES

    2.1 ElectroMechanical Interaction in a system with a Variable Speed Drive

    2.2 Harmonics and Interharmonics in a 12 pulse converter

    3 CLOSED LOOP ELECTROMECHANICAL MODEL

    4 VALIDATION OF THE MODEL

    4.2 Constant Torque Set Point

    4.3 Change in Torque Set Point

    CONCLUSIONS AND NEXT STEPS

    Author Index

Product details

  • No. of pages: 840
  • Language: English
  • Copyright: © Woodhead Publishing 2012
  • Published: September 11, 2012
  • Imprint: Woodhead Publishing
  • eBook ISBN: 9780857094537
  • Paperback ISBN: 9780857094520

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