Proceedings of the 11th IFToMM International Conference on Rotordynamics

Name: Proceedings of the 11th IFToMM International Conference on Rotordynamics | Volume 1
Brand: Springer
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Volume 1

Fulei Chu Zhaoye Qin(Editor)

Springer (Publisher)

1st Edition

Published on 26. August 2023

X, 548 pages

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978-3-031-40455-9 (ISBN)

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Content

Intro
Preface
Contents
Dynamic Analysis and Safety Design for Aero-Engine Rotor-Support System Under the Blade-off
1 Introduction
2 Dynamic Model of Rotor-Support System with Blade-Off
2.1 Structural Characteristics of Power Turbine Rotor and Support Structure
2.2 Physical Process of Turbine Blade-Off Event
2.3 Dynamic Model and Governing Equations
2.4 Solution Flow of the Governing Equation Based on Explicit Dynamic
3 Dynamic Analysis of the Rotor-Support System
3.1 Modal Characteristics of the System
3.2 Dynamic Response of the System Under the Turbine Blade-Off
4 Safety Design for the Rotor-Support System
4.1 Structure Design
4.2 Update of the Dynamic Model
4.3 Dynamic Analysis
5 Conclusions
References
Application of Metamaterial in Vibration Suppression of Rotor System
1 Introduction
2 Fundamental Design Methods of Vibration Isolators and Absorbers for Rotor System
3 Inerter Enhanced Meta-shaft
3.1 Structure of the Inerter Enhanced Meta-shaft
3.2 Intermediate Wheel Drive Amplification Mechanism
3.3 Dynamic Equations of the Proposed Meta-shaft
3.4 Vibration Transmission Loss and Band Gap Analysis
4 Experimental Study
4.1 Experiment Setup
4.2 Experiment Results
5 Conclusions
References
A Novel Approach to Model the Shrink-Fit Connection
1 Introduction
2 Analytical Modeling
3 Discussion
3.1 Comparison with FEM
3.2 Parameter Study
4 Conclusion
References
Numerical Analysis of the Effect of Different Surface Textures on the Steady State Characteristics of Tilting Pad Journal Bearings
1 Introduction
2 Governing Equation
2.1 The Reynolds Equation
2.2 Moment on Pad
2.3 Thermal Effects
2.4 Elastic Deformation
2.5 Lubricant Film Thickness
3 Numerical Method
4 Results and Discussion
4.1 Validation of the Model
4.2 Effect on Pressure
4.3 Effect on Maximum Temperature
4.4 Effect on Bearing Capacity
5 Conclusion
References
Effect of Support Parameters on the Vibrations of a Cracked Rotor Passing Through Critical Speed
1 Introduction
2 Rotor System Model
3 Results and Discussion
3.1 Validation of Results
3.2 Support Parameter Study
4 Conclusion
References
Active Suppression of Multi-frequency Vibration of Rotor Based on Adaptive Immersion & Invariant Theory
1 Introduction
2 Method
2.1 Model of Rotor-Bearing-AMA System
2.2 Adaptive Immersion and Invariance Theory
2.3 Design of Controller
3 Experiments
3.1 Description of Test Rig
3.2 Results at Multi Speeds
3.3 Comparison of PD-I&I and PD Algorithms with Different Parameters
4 Conclusion
References
Simulation Study for Hole Diaphragm Labyrinth Seal at Synchronous Whirl Frequency
1 Introduction
2 Model Establishment
3 Results and Discussion
4 Conclusions
References
Effect of Flow Rate on the Performance of an Evacuated Tilting Pad Journal Bearing: Load on Pad vs. Load-Between-Pad Configurations
1 Introduction
2 Description of Test Rig and Bearings
3 Experimental Procedure
4 Experimental Results and Discussion
4.1 Bearing Eccentricity
4.2 Pad Temperatures and Oil Exit Temperature
4.3 Force Coefficients for LOP and LBP Bearings with Evacuated Ends
5 Conclusion
References
Dynamic Performance of an O-Ring Sealed Squeeze Film Damper and a Simple Way to Estimate the (Ingested) Gas Content in a Squeeze Film
1 Introduction
2 Appraisal of Prior Work
3 Description of Test Rig, SFD and Seals
4 Test Procedure and Identification of Force Coefficients
5 Force Coefficients for O-rings
6 Force Coefficients for Sealed SFD
7 Estimation of Gas Volume Fraction in O-ring Sealed Damper
8 Conclusion
References
Bearing Fault Diagnosis Using Transfer Learning with ICCEMDAN
1 Introduction
2 Signal Processing Methods
3 Convolutional Neural Network Model and Transfer Learning Model
3.1 1-D VGG16 Convolution Neural Network Model
3.2 1-D VGG16 Transfer Learning Model
3.3 This Paper Presents a Method
4 Experimental Verification
4.1 Description of Experimental Data Set
4.2 Data Preprocessing
4.3 Experiments and Results
5 Conclusion
References
Dynamic Modeling and Stability Analysis of the Rod-Fastening Rotor System with the Different Preload Status
1 Introduction
2 Modeling of RFCR System
2.1 Structure of Tie-rod Combined Rotor
2.2 Motion Equation of Tie-rod Combined Rotor
3 Numerical Results and Discussion
3.1 Validation
3.2 Nonlinear Dynamics Comparison of RFCR Under Different Preload Conditions
4 Conclusions
Appendix A
Appendix B
References
Modeling Rotordynamic Effects of Angular Contact Ball Bearing in X- and O-arrangements with Full Bearing Matrix
1 Introduction
2 Theoretical Background
2.1 System Equations
2.2 3D Solid FE and Spiderweb Beam Elements
2.3 Ball Bearing Stiffness Formulation
3 Results and Discussions
4 Conclusions
References
Research on the Nonlinear Response of the Rotor System with Bolted Joint with Spigot
1 Introduction
2 Mechanical Model of Slip Damage at the Spigot Interface
2.1 The Distribution Function of Slippage at the Spigot Interface
2.2 Force-Displacement Relationship of Spigot Interface
3 Dynamic Characteristic of the Non-continuous Rotor System
3.1 The Rotor Example
3.2 The Slip Damage
3.3 Discussion
4 Conclusion
References
On the Influence of the Lubricant Feed Orifice Size and End Plate Seals' Clearance on the Static and Dynamic Performance of Integral Squeeze Film Dampers
1 Introduction
2 Analysis
3 Fluid Film Pressure Field and Lubricant Flow Rate
4 Dynamic Force Coefficients
5 Conclusion
References
Dropdown Analysis of High-Speed Thin-Shaft Coupled Rotor System Integrated with Three Active Magnetic Bearings
1 Introduction
2 Mathematical Modelling of Thin-Shaft Coupled Rotor-AMB System with TDBs
2.1 Equations of Motion of Rotor System
2.2 AMB Support System Model
2.3 Touchdown Bearing Force Model
2.4 Overall Equation of Motion of Rotor-AMB System Integrated with TDBs
3 Dropdown Analysis of the Developed System Model
3.1 Test Rig Description and Simulation Model
4 Results and Discussions
4.1 Displacement Response for Dropdown at Spin Condition (? = 50 Hz, Anticlockwise), Without Unbalance
4.2 Displacement Response for Dropdown at Spin Condition (? = 50 Hz, 100 Hz and 150 Hz Anticlockwise), with Unbalance
5 Conclusions
References
Parametric Analysis of Journal Bearings with Chevron Textures on the Shaft Surface
1 Introduction
2 Mathematical Model
3 Parametric Analysis
4 Conclusion
References
Prediction of Remaining Useful Life of Passive and Adjustable Fluid Film Bearings Using Physics-Based Models of Their Degradation
1 Introduction
2 Materials and Methods
2.1 Subject
2.2 Approach to Considering the Bearing Degradation
3 Results and Discussion
4 Conclusion
References
Application of Machine Learning in Simulation Models and Optimal Controllers for Fluid Film Bearings
1 Introduction
2 Modeling and Methods
3 Results and Discussion
3.1 Approximation of FFB Models
3.2 Data Driven FFB Models in Control Tasks
4 Conclusion
References
Study on Solution Algorithm of Reynolds Equation of Self-acting Gas Journal Bearings Based on Finite Difference Method
1 Introduction
2 Static Reynolds Equation for Self-acting Gas Bearing
2.1 Algorithm of Numerical Solution
2.2 Typical Algorithm of Numerical Solution
2.3 New Algorithm of Numerical Solution
3 Program Verification
4 Algorithm Comparison
5 Conclusion
References
The Dynamic Equilibrium Surfaces Calculation in the Liquid Friction Conical Bearings
1 Introduction
2 Modelling the Rotor-Bearing System
3 Results and discussion
4 Conclusions
References
Early Warning Signal Based on Global Dynamics for Instability Responses in Rotor/Stator Rubbing System
1 Introduction
2 Global Dynamics in Rotor/Stator Rubbing System
2.1 Rotor/Stator Rubbing Model
2.2 Global Dynamic Structures with Slow-Varying Parameters
3 Multi-level Warning Indicator
4 Early Warning of Instability Responses in the Rotor System
5 Conclusion
References
Research on Rub-Impact Fault Quantification of Rotor System Based on Effective Singular Value Noise Reduction and Minimum Mutual Entropy Principle
1 Introduction
2 Related Theories
2.1 SVD
2.2 MMEP
2.3 Calculation the Number of Effective Singular Value
3 Performance of the Improved Method
3.1 Simulation Results
3.2 Experiment Results
4 Fault Quantification
5 Conclusion
References
Influence of Slight Gravitational Effect on the Characteristics of Onset Speeds of Instability and Stability in the Vertical Rotating Shaft Supported by Journal Bearing
1 Introduction
2 Theoretical Analysis
2.1 Model and Equations of Motion (EOM)
2.2 Shooting Method [5, 6]
3 Results and Discussion
3.1 Characteristic Curves Under Different Values of Drift
3.2 Discussion
4 Conclusions
References
Investigation of Journal Gas Foil Bearing Characteristics with Foils Prestress from Assembling Taken into Account
1 Introduction
2 Model of Foil Deformations
3 Calculation Results and Verification with Experimental Data
4 Conclusion
References
Investigation on Feature Attribution for Remaining Useful Life Prediction Model of Cryogenic Ball Bearing
1 Introduction
2 Feature Evaluation Process
2.1 Experimental Setup
2.2 Model Definition
2.3 Feature Attribution
3 Results
4 Discussion
5 Conclusions
References
Numerical Investigation on Leakage Characteristics of a Novel Honeycomb Seal with Wall Holes
1 Introduction
2 Numerical Models and Calculation Method
2.1 Geometrical Model of the Single-Wall-Wole-Honeycomb Seal
2.2 Numerical Method and Grid Meshing
3 Results and Discussion
4 Conclusions
References
Dynamic Performance of Spacecraft Flywheel Ball Bearing with Different Type and Distribution of Cage Pocket Shape
1 Introduction
2 Dynamic Model and Test Bench Description
2.1 Cage Dynamic Model
2.2 Test Bench
3 Discussion on Test and Calculation Result
4 Conclusions
References
High Speed Rotor Drop-Downs in Different Planetary Touch-Down Bearings Differing in the Number of Bearing Units
1 Introduction
2 Method
3 Test Rig
3.1 Mechanical Design
3.2 Measurement System
4 Modeling
5 Results
5.1 Simulation Results
5.2 Experimental Results
6 Discussion
6.1 Discussion Of Simulation Results
6.2 Discussion of Experimental Results
6.3 Comparison of Simulation and Experimental Results
7 Conclusion
References
Model Based Identification of the Measured Vibration Multi-fault Diagnostic Signals Generated by a Large Rotating Machine
1 Introduction
2 Modelling of the Blower Rotor-Shaft System with Imperfections
3 Mathematical Solution of the Problem
4 Modelling of the Rotor-Shaft System Imperfections
5 Multi-fault Identification Procedure
6 Exemplary Results of Identification
7 Final Remarks
References
Vibration Reduction in an Unbalanced Rotor System Using Nonlinear Energy Sinks with Varying Stiffness
1 Introduction
2 Theoretical Formulation
2.1 Application of Harmonic Balancing
2.2 Estimation of Solution Stability
3 Parametric Analysis on Response Behaviour
3.1 Primary system with hardening NES
3.2 Primary System with Softening NES
4 Comparison of Stiffness Characteristics
5 Conclusion
Appendix A: Realization of Stiffness Nonlinearity
References
Modelling and Validation of Rotor-Active Magnetic Bearing System Considering Interface Contact
1 Introduction
2 Modelling of the Rotor-AMBs System Considering Interface Contact
2.1 Modelling of the Rotor-AMBs System
2.2 Modelling of Interface Contact
3 Numerical Simulation and Experiment Validation of Different Magnetically Suspended Rotors
3.1 Magnetic Levitation Blower
3.2 Magnetic Levitation Motor
4 System Stability Analysis
5 Conclusion
References
Experiment and CFD Analysis of Plain Seal, Labyrinth Seal and Floating Ring Seal on Leakage Performance
1 Introduction
2 CFD Modeling of Sealing Unity in Cryogenic Environment
2.1 Descriptions of Test Apparatus and Seal Geometry
2.2 CFD Results of Sealing Unit in the Cryogenic Environment
3 Experimental System for Leakage Performance and Roughness Measurement
3.1 Description of Experiment Leakage Performance Test for Sealing Unit
3.2 Experimental Results of Leakage Performance Test
3.3 Roughness Measurement of Seal Surface for Investigating Wear
4 Conclusion
Appendix. Sensor Uncertainty
References
Rolling Element Bearing Fault Diagnosis Using Hybrid Machine Learning Models
1 Introduction
2 Machine Learning Algorithms
2.1 Logistic Regression
2.2 Random Forest
2.3 Support Vector Machines
3 Diagnosis of Rolling Element Bearing Faults
3.1 Data Set
3.2 Data Processing and Feature Extraction
3.3 Training
4 Results and Discussion
5 Conclusions
References
Fluid-Structure Analysis of a Hybrid Brush Seal
1 Introduction
2 Hybrid Brush Seal
3 Fluid-Structure Interaction Model
4 Conclusions
References
Effects of Relief Hole on the Static Characteristics of Externally Pressurized Steam-Lubricated Hybrid Journal-Thrust Bearing
1 Introduction
2 Numerical Method
2.1 Geometry Model and Mesh
2.2 Properties of Steam
2.3 Numerical Model and Verification
3 Results and Discussion
3.1 Traditional Externally Pressurized Steam Hybrid Journal-Thrust Bearing
3.2 Externally Pressurized Steam Hybrid Journal-Thrust Steam Bearing with Relief Holes
3.3 Effects of Relief Holes Distribution
4 Conclusion
References
Simulation Analysis of Main Bearing Vibration Characteristics of Wind Turbine
1 Introduction
2 Theoretical Analysis of the Inherent Frequency of the Main Bearing
3 Establishment of Finite Element Model
3.1 Model Building
3.2 Adding Material Properties
3.3 Mesh Division
3.4 Force Analysis
4 Modal Analysis
4.1 No-Load Modal Analysis
4.2 Loading Modal Analysis
4.3 Data Analysis Comparison and Conclusion
5 Constrained Radial Axial Vibration Simulation Experiment
5.1 Determination of Working Conditions and Loads
5.2 Simulation Results
6 Conclusion
References
Study of Multiplicative Load on the Misaligned Rotor-AMB System
1 Introduction
2 System Modeling and Analysis
2.1 System Configuration and Governing Equation
2.2 Modelling of Coupling Misalignment
2.3 AMB Force Modeling
3 Forced Response Analysis
3.1 Numerical Simulation
3.2 Result and Discussion
4 Conclusion
References
Intelligent Fault Classification of a Misaligned Geared-Rotor Machine Equipped with Active Magnetic Bearings
1 Introduction
2 Experimental Test Rig
2.1 Principal of Operation of Active Magnetic Bearings
2.2 Introduction of Angular Misalignment Fault in the Test Rig
3 Intelligent Fault Classification Framework
3.1 Construction of Suitable Features
3.2 Performance of Various Features
3.3 Implementing ANN Based Multilayer Perceptron
4 Conclusion
References
Eigenvalues of the Free Rotation Mode of the Multi-bladed Rotor
1 Introduction
2 Methodology
2.1 Corotational Formulation
2.2 Constraints
2.3 Inertial Forces and Torques
2.4 MBC Transformation
2.5 Eigenvalue Analysis
3 Numerical Experiments
3.1 Single Rigid Body
3.2 Rigid Rotor
3.3 Flexible Rotor
4 Conclusions
References
The Passive Vibration Control in Bridge Configured Winding Cage Rotor Induction Motor: An Experimental Analysis
1 Introduction
1.1 Bridge Configured Winding (BCW)
2 Experimental Test Setup
2.1 Rotor Modal Parameter Identification
3 Result and Discussions
3.1 Proposed Analytical Rotordynamic Model
4 Conclusions
References
Identification Method for Cage Rubbing Faults of Flywheel Bearings Based on Characteristic Frequency Ratio and Convolutional Neural Network
1 Introduction
2 Fault Identification Method Based on CFR and CNN
2.1 The Basic Principle of CFR
2.2 The Basic Principle of CNN
2.3 Diagnostic Process Based on CFR and 1DCNN
3 Experiment and Analysis
3.1 Vibration Experiment
3.2 Primary Diagnosis Based on EEMD, HT, and CFR
3.3 Further Diagnosis Based on 1DCNN Model
3.4 Analysis
4 The Application Effect and Discussion
5 Conclusion
References
Unbalance Measurement Traceability
1 Introduction
2 Rotor Unbalance and Unbalance Measurement
2.1 Rotor Unbalance
2.2 Unbalance Measurement
3 Traceable Unbalance Measurement Method
3.1 Unbalance Weight
3.2 Decompose Unbalance of Rotor and Unbalance Outside of the Rotor
4 Application
5 Conclusion
References
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Proceedings of the 11th IFToMM International Conference on Rotordynamics

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