Proceedings of the 11th IFToMM International Conference on Rotordynamics : Volume 1 / / edited by Fulei Chu, Zhaoye Qin

• Autore: Chu Fulei
• Pubblicazione: Cham : , : Springer International Publishing : , : Imprint : Springer, , 2024
• Edizione: 1st ed. 2024.
• Descrizione fisica: 1 online resource (558 pages)
• Disciplina: 621.8; 621.82
• Soggetto topico: Machinery; Mechanics, Applied; Control engineering; Robotics; Automation; Machinery and Machine Elements; Engineering Mechanics; Control, Robotics, Automation
• Altri autori: QinZhaoye
• Nota di contenuto: 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 (ω = 50 Hz, Anticlockwise), Without Unbalance -- 4.2 Displacement Response for Dropdown at Spin Condition (ω = 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.
• Sommario/riassunto: This book presents the proceedings of the 11th IFToMM International Conference on Rotordynamics, held in Beijing, China on 18-21 September 2023. This conference is a premier global event that brings together specialists from the university and industry sectors worldwide in order to promote the exchange of knowledge, ideas, and information on the latest developments and applied technologies in the dynamics of rotating machinery. The coverage is wide ranging, including, for example, new ideas and trends in various aspects of bearing technologies, issues in the analysis of blade dynamic behavior, condition monitoring of different rotating machines, vibration control, electromechanical and fluid-structure interactions in rotating machinery, rotor dynamics of micro, nano and cryogenic machines, and applications of rotor dynamics in transportation engineering. Since its inception 32 years ago, this conference has become an irreplaceable point of reference for those working in the field and this book reflects the high quality and diversity of content that the conference continues to guarantee.
• Titolo autorizzato: Proceedings of the 11th IFToMM International Conference on Rotordynamics
• ISBN: 3-031-40455-6
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910760266903321
• Lo trovi qui: Univ. Federico II
• Serie: Mechanisms and Machine Science, . 2211-0992 ; ; 139