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Informationen zum Autor J. K. Wang, PhD, PE has over 20 years' academic and industrial experience in the design and vibration analysis of high-speed rotating machinery associated with fluid film bearings. Dr. Wang currently works as the Director of Engineering and Product Development of reciprocating and centrifugal pumps business units for TSC Group. He received his bachelor and master degrees from Xi'an Jiaotong University, and his doctoral degree from Louisiana State University. He is a professional engineer registered in the state of Texas, a certified Category IV Vibration Analyst, and Category IV Vibration Consultant listed by Vibration Institute. He holds the membership of ASME, ASM, SPE, and AISC. M. M. Khonsari holds the Dow Chemical Endowed Chair at Louisiana State University (LSU). He is holder of several US patents, has authored over 250 archival papers, 50 book chapters and special publications, and three books. Professor Khonsari is the recipient of several research awards including the ASME Mayo Hersey Award, Burt Newkirk Award, the STLE Presidential Award awards for his contributions to tribology. He is the Editor-in-Chief for ASME Journal of Tribology. Professor Khonsari is a fellow of American Society of Mechanical Engineers (ASME), Society of Tribologist and Lubrication Engineers (STLE), and American Association for the Advancement of Science (AAAS). Klappentext 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 Zusammenfassung Thermohydrodynamic Instability in Fluid-Film Bearings aims to establish instability criteria for a rotor-bearing system associated with fluid-film journal bearings. Inhaltsverzeichnis Preface xi Acknowledgements xiii 1 Fundamentals of Hydrodynamic Bearings 1 1.1 Reynolds Equation 3 1.1.1 Boundary Conditions for Reynolds Equation 6 1.1.2 Short Bearing Approximation 7 1.1.3 Long Bearing Approximation 7 1.2 Short Bearing Theory 8 1.2.1 Analytical Pressure Distribution 8 1.2.2 Hydrodynamic Fluid Force 9 1.2.3 Static Performance of Short Journal Bearings 11 1.3 Long Bearing Theory 13 1.3.1 Analytical Pressure Distribution of Long Journal Bearings 13 1.3.2 Hydrodynamic Fluid Force of Long Journal Bearings 17 1.3.3 Static Performance of Long Journal Bearings 19 1.4 Finite Bearing Solution 26 References 28 2 Governing Equations for Dynamic Analysis 29 2.1 Equation of Motion 29 2.2 Decomposition of the Equations of Motion Based on Short Bearing Theory 31 2.2.1 Laminar Flow Simplification 33 2.3 Decomposition of the Equations of Motion Based on Long Bearing Theory 34 2.4 Summary 37 References 37 3 Conventional Methods on System Instability Analysis 39 3.1 Linearized Stiffness and Damping Method 41 3.1.1 Derivation of Linearized Bearing Stiffness and Damping Coefficients 41 3.1.2 Instability Threshold Speed Based on the Linearized Stiffness and Damping Coefficients 48 3.2 Nonlinear Method 51 3.2.1 Brief Description of Trial-and-Error Method 51 3.2.2 Illustration of the Trial-and-Error Method 51 3.2.3 Comparison Between Different Types of Fluid-Film Boundary ...
