Proceedings of the 11th IFToMM International Conference on Rotordynamics : Volume 2 / / 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 (494 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 -- Numerical Analysis of Seal Force Under Brush Seal Hysteresis Effect -- 1 Introduction -- 2 Seal Force Analysis -- 2.1 Hysteresis Effect -- 2.2 Seal Force Model -- 3 Result and Discussion -- 3.1 Influence of Hysteresis Effect on Brush Seal Force -- 3.2 Influence of Brush Inclination Angle on Seal Force Under Hysteresis Effect -- 4 Conclusions -- References -- Investigation on Nonlinear Behavior of a Rotor System with Friction Effect Due to End-Face Seal -- 1 Introduction -- 2 Modeling of Offset Disc Rotor-End Seal System -- 2.1 Mechanical Model of Rotary/Static End Seal -- 2.2 Dynamic Equation of Offset Disc Rotor-End Seal System -- 3 Vibration Response Analysis of Rotor System -- 3.1 Rotor System Parameters and Calculation of Inherent Characteristics -- 3.2 Response Characteristics of Rotor System Under Excitation Force of End Face Seal -- 4 The Influence of Key Parameters on Rotor Vibration Response -- 4.1 Influence of Rotor Parameters -- 4.2 The Influence of Sealing Mechanical Parameters -- 5 Conclusion -- References -- Analysis and Safety Design of Aero-Engine Rotor Dynamic Response with Multiple Loads Due to Fan Blade off -- 1 Introduction -- 2 Description of Rotor Load Characteristics After FBO -- 3 Action Mechanism of Multiple Loads with FBO -- 3.1 Sudden Unbalance Load -- 3.2 Inertial Asymmetric Disk -- 3.3 Rub-Impact Excitation -- 3.4 Rotor Dynamics Model with Multiple Loads -- 4 Modeling and Analysis Method of Low-Pressure Rotor -- 4.1 Establishment of Low-Pressure Rotor Model -- 4.2 Dynamic Response Analysis Method -- 5 Analysis of Rotor Dynamic Response with Multiple Load Excitation -- 5.1 Inertia Symmetric Rotor -- 5.2 Inertia Asymmetric Rotor -- 6 Safety Design of Support Structure -- 6.1 Safety Design Strategy -- 6.2 Effect of Reducing Support Stiffness -- 6.3 Effect of Increasing Support Damping. ; 7 Conclusion -- References -- Numerical Simulation of Aero-Engine Rotor-Blade-coating Coupling System with Rub-impact Fault and Its Dynamic Response -- 1 Introduction -- 2 Rub-impact and Rotor Dynamic Modeling -- 2.1 Rub-impact Modeling -- 2.2 Solution Process Analysis -- 2.3 Rotor System Modeling -- 2.4 Model Validation -- 3 Results and Discussions -- 3.1 Analysis of Rub-impact Simulation -- 3.2 Rub-impact Results Analysis Under Different Coating Materials -- 3.3 Rub-impact Results Analysis Under Different Invasion Depth -- 3.4 The Dynamic Response of Rotor System with Rub-impact Fault -- 4 Conclusions -- References -- Modeling and Simulation Analysis of Dual-Rotor System in the Early Stage of Bearing Pedestal Looseness -- 1 Introduction -- 2 Dynamic Modeling of Bearing Pedestal Looseness in Dual-Rotor System -- 3 Analysis of Dual-Rotor System in the Early Stage of Bearing Pedestal Looseness -- 3.1 Simulation Analysis of the Dynamics of the Dual-Rotor System at the Early Stage of Bearing Pedestal Looseness -- 3.2 Experimental Analysis of the Dynamics of the Dual-Rotor System at the Early Stage of Bearing Pedestal Looseness -- 4 Conclusion -- References -- Similarity Design and Behavior Prediction of Rotor Systems Subject to Non-uniform Preloads -- 1 Introduction -- 2 Continuous Structure Treatment -- 2.1 Contact Mechanics Modeling -- 2.2 Structural Continuity Modeling Method -- 3 Similarity Theory -- 4 Modeling and Verification -- 4.1 Results of Case 1 -- 4.2 Results of Case 2 -- 4.3 Results of Case 3 -- 5 Conclusions -- References -- Vibration Reduction Optimization Design of an Energy Storage Flywheel Rotor with ESDFD -- 1 Introduction -- 2 Dynamical Model -- 2.1 Two-Dimensional Friction Model -- 2.2 Dynamics Model of the Flywheel Rotor with ESDFDs -- 3 Optimization Design of Flywheel Rotor System with ESDFDs -- 3.1 Design Parameters. ; 3.2 Constraint Condition -- 3.3 Objective Function -- 3.4 Optimization Design Based on MPSO -- 4 Results and Discussion -- 5 Conclusions -- References -- Sensitivity of Spline Self-excited Vibration to Structure Parameters -- 1 Introduction -- 2 Analytical Model -- 2.1 Spline Stiffness -- 2.2 Spline Damping -- 2.3 Spline-Rotor System -- 2.4 System Parameter -- 3 Influence of Each Parameter on the Self-excited Vibration of the System -- 3.1 Number of the Spline Teeth -- 3.2 Spline Module -- 3.3 Spline Pressure Angle -- 3.4 Spline Width -- 4 Conclusions -- References -- Parametric Optimization of BNES in Torsional Vibration Suppression of Rotor Systems -- 1 Introduction -- 2 BNES Structure and System Dynamic Equations -- 2.1 BNES Structure -- 2.2 Magnet Restoring Force -- 2.3 Dynamic Model of the Rotor-BNES System -- 3 Parameter Optimization and Result Analysis -- 3.1 Parameter Setting -- 3.2 Parameter Optimization Under Transient Response -- 3.3 Vibration Reduction Analysis Under Transient Response -- 3.4 Parameter Optimization Under Steady-State Responses -- 3.5 Vibration Reduction Analysis Under Steady-State Response -- 4 Experimental Research -- 4.1 Experimental Set-Up for BNES Effectiveness -- 4.2 Experimental Results -- 5 Conclusions -- References -- Aviation Spline Wear Test Bench and Fretting Wear Measurement -- 1 Introduction -- 2 Spline Wear Test Bench -- 3 Functional Analysis of the Test Bench -- 3.1 Implementation of Angular Misalignment -- 3.2 Spline Torque Application and Feedback Measurement -- 4 Wear Measurement -- 5 Test Result Analysis -- 6 Conclusion -- References -- Dynamic Analysis of the Finger Seal-Rotor System -- 1 Introduction -- 2 Method -- 2.1 Geometric Relationship -- 2.2 Interaction Between Seal Laminates -- 2.3 Finger Seal-Rotor System -- 3 Results and Discussion -- 4 Conclusion -- References. ; Investigation on Information Assessment for Vibration Sensor Locations Installed in Aero-Engine Based on Unbalance Response Analysis -- 1 Introduction -- 2 Model Description -- 3 Method -- 3.1 Method for Vibration Sensors Preliminary Information Assessment Evaluation -- 3.2 Clarification of Vibration Sensors Information Assessment Based on Unbalance Response Analysis -- 4 Simulation Results -- 4.1 Model Set Up -- 4.2 Vibration Sensors Preliminary Information Assessment Evaluation -- 4.3 Vibration Sensors Information Assessment Clarification based on Unbalance Response Analysis -- 5 Conclusion -- References -- Torsional Vibration Modelling of a Two-Stage Closed Differential Planetary Gear Train -- 1 Introduction -- 2 Torsional Model -- 2.1 Relative Displacements -- 2.2 Meshing Error Excitation -- 2.3 Equations of Motion -- 3 Results and Discuss -- 3.1 Stability Time-Domain Response -- 3.2 Coupling Analysis -- 3.3 Torsional Vibration Analysis -- 4 Conclusions -- References -- Research on Robustness Analysis and Evaluation Method of Bearing-Support System -- 1 Introduction -- 2 Structure System and Load -- 2.1 Composition of Structural System -- 2.2 Interface Contact Characteristic -- 2.3 Load Environment -- 3 Damage and Failure Analysis of Bearing-Support System -- 3.1 Failure Mode -- 3.2 Structural System Robustness Evaluation Method -- 4 Examples of Robustness Evaluation -- 4.1 Modeling of Bearing-Support System -- 4.2 Damage Evaluation Under Assembly and Centrifugal Load -- 4.3 Damage Evaluation Under Periodic Impact Excitation -- 4.4 Damage Evaluation Under Lateral Load -- 4.5 Damage Evaluation Under Maneuvering Flight -- 5 Conclusion -- References -- Investigation on the Transient Lateral Vibration of a Flexible Rotor System with Substantial Unbalance -- 1 Introduction -- 2 Dynamic Modeling of a Flexible Rotor with Substantial Unbalance. ; 2.1 Finite Element Modeling of Rotor System -- 2.2 Model of Disk with Substantial Unbalance -- 2.3 Governing Equation of Whole Rotor System -- 3 Mode and Stability Analysis of the Flexible Rotor System -- 4 Transient Responses of the Flexible Rotor System -- 4.1 Linear Case -- 4.2 Nonlinear Case -- 5 Conclusions -- References -- Dynamic Behaviors of a Bolted Joint Rotor System Considering the Contact State at Mating Interface -- 1 Introduction -- 2 Nonlinear Mechanical Modeling of Bolted Joint Structure -- 3 Dynamic Modelling of the Bolted Joint Rotor -- 4 Numerical Simulation Results and Discussions -- 5 Experimental Study -- 6 Conclusions -- References -- Identification of High-Speed Gear Traveling Wave Resonance Based on Phase Space Reconstruction Method -- 1 Introduction -- 2 Methodology of the PSCOR -- 3 Experimental Design on High-Speed Gear TWR -- 4 TWR Characteristics of the Experimental Gear -- 4.1 Instantaneous Displacement Characteristics -- 4.2 Dynamic Stress Characteristics -- 5 Experimental Validation of the Proposed Method -- 5.1 Time-Frequency Response of the Captured Experimental Strains -- 5.2 Identification of the TWR by PSCOR -- 6 Conclusion -- References -- Rotordynamics of a Vibroflot -- 1 Introduction -- 2 Numerical Model -- 2.1 Electro-Magnetic Model -- 2.2 Multi-rotor Model -- 2.3 Global Model Assembly -- 3 In-situ Experimental Investigation -- 4 Results and Comparison with In-situ Experiments -- 5 Conclusion and Perspectives -- References -- Complex Stable and Unstable Subharmonic Vibrations of a Nonlinear Brush-Seal Rotor System -- 1 Introduction -- 2 Governing Equations -- 2.1 Nonlinear Brush-Seal Rotor Models -- 3 Results -- 3.1 Subharmonic Vibration Prediction -- 3.2 Subharmonic-1/3 and 1/7 Vibration -- 3.3 Subharmonic Vibration Illustration -- 4 Conclusion -- References. ; Multi-objective Optimization of Active Dry Friction Damper-Rotor Systems Based on Predictive Control.
• 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 workingin 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: 3-031-40459-9
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910760261203321
• Lo trovi qui: Univ. Federico II
• Serie: Mechanisms and Machine Science, . 2211-0992 ; ; 140