Thermohydrodynamic Instability in Fluid–Film Bearings aims to establish instability criteria for a rotor–bearing system associated with fluid–film journal bearings. It focuses on how the influencing factors such as rotor flexibility, manufacturing imperfections such as residual shaft unbalance, and service–related imperfections such as uneven wear affect the stability of a rotor–bearing system It shows how the specific operating conditions such as oil inlet temperature, inlet pressure, and inlet position of a rotor–bearing system directly influence the system stability General design guidelines have been summarized to guide the engineering system design and the correction of failure and/or malfunction INDICE: PrefaceAcknowledgements1. Fundamentals of Hydrodynamic Bearings1.1 Reynolds Equation1.2 Short Bearing Theory1.3 Long Bearing Theory1.4 Finite Bearing Solution2. Governing Equations for Dynamic Analysis2.1 Equation of Motion2.2 Decomposition of the Equations of Motion Based on Short Bearing Theory2.3 Decomposition of the Equations of Motion Based on Long Bearing Theory2.4 Summary on the Decomposed System Equations of Motion3. Conventional Methods on System Instability Analysis3.1 Linearized Stiffness and Damping Method3.2 Nonlinear Method4. Introduction to Hopf Bifurcation Theory (HBT)4.1 Brief Description of Hopf Bifurcation Theory4.2 Shape and Size and Stability of Periodic Solutions4.3 Definition of Orbital–Asymptotically Stable with an Asymptotic Phase5. Application of HBT to Fluid–Film Bearings5.1 Application I: Prediction of Stability Envelope5.2 Application II: Explanation of Hysteresis Phenomenon Associated with Instability6. Analysis of ThermohydrodynamicInstability6.1 Inlet Temperature Effects6.2 Inlet Pressure and Inlet Position Effects6.3 Rotor Stiffness Effects6.4 Worn Journal Bearing Bushing Effects6.5 Shaft Unbalance Effects6.6 Turbulence Effects6.7 Drag Force EffectsAppendicesAppendix A Derivation of the Dynamic Pressure for Long Journal BearingAppendix B Integrals Used in the Section 1.3Appendix C Curve–fitting Functions for Long Journal BearingsAppendix D Jacobian Matrix of the Equations of MotionAppendix E Matlab Code to Evaluate Rotor Shaft Unbalance EffectsAppendix F NomenclatureIndex
- ISBN: 978-0-470-05721-6
- Editorial: Wiley–Blackwell
- Encuadernacion: Cartoné
- Páginas: 232
- Fecha Publicación: 22/01/2016
- Nº Volúmenes: 1
- Idioma: Inglés