Читать книгу Bearing Dynamic Coefficients in Rotordynamics - Lukasz Brenkacz - Страница 2
Table of Contents
Оглавление1 Cover
8 Preface
9 Symbols and Abbreviations Symbols Abbreviations
10 About the Companion Website
11 1 Introduction 1.1 Current State of Knowledge 1.2 Review of the Literature on Numerical Determination of Dynamic Coefficients of Bearings 1.3 Review of the Literature on Experimental Determination of Dynamic Coefficients of Bearings 1.4 Purpose and Scope of the Work
12 2 Practical Applications of Bearing Dynamic Coefficients 2.1 Single Degree of Freedom System Oscillations 2.2 Oscillation of Mass with Two Degrees of Freedom 2.3 Cross‐Coupled Stiffness and Damping Coefficients 2.4 Summary
13 3 Characteristics of the Research Subject 3.1 Basic Technical Data of the Laboratory Test Rig 3.2 Analysis of Rotor Dynamics 3.3 Analysis of the Supporting Structure 3.4 Summary
14 4 Research Tools 4.1 Test Equipment 4.2 Test.Lab Software 4.3 Samcef Rotors Software 4.4 Matlab Software 4.5 MESWIR Series Software (KINWIR, LDW, NLDW) 4.6 Abaqus Software
15 5 Algorithms for the Experimental Determination of Dynamic Coefficients of Bearings 5.1 Development of the Calculation Algorithm 5.2 Verification of the Calculation Algorithm on the Basis of a Numerical Model 5.3 Results of Calculations of Dynamic Coefficients of Bearings 5.4 Summary
16 6 Inclusion of the Impact of an Unbalanced Rotor 6.1 Calculation Scheme 6.2 Definition of the Scope of Identification 6.3 Results of the Calculation of Dynamic Coefficients of Bearings Including Rotor Unbalance 6.4 Summary
17 7 Sensitivity Analysis of the Experimental Method of Determining Dynamic Coefficients of Bearings 7.1 Method of Carrying Out a Sensitivity Analysis 7.2 Description of the Reference Model 7.3 Influence of the Stiffness of the Rotor Material 7.4 Influence of Uneven Force Distribution on Two Bearings 7.5 Changing the Direction of the Excitation Force and its Effect on the Results Obtained 7.6 Eddy Current Sensor Displacement Impact Assessment 7.7 Calculation Results for an Asymmetrical Rotor 7.8 Summary
18 8 Experimental Studies 8.1 Software Used for Processing of Signals from Experimental Research 8.2 Software Used for Calculations of Dynamic Coefficients of Bearings 8.3 Preparation of Experimental Tests 8.4 Implementation of Experimental Research 8.5 Processing of the Signal Measured During Experimental Tests 8.6 Results of Calculations of Dynamic Coefficients of Hydrodynamic Bearings on the Basis of Experimental Research 8.7 Verification of Results Obtained 8.8 Summary
19 9 Numerical Calculations of Bearing Dynamic Coefficients 9.1 Method of Calculating Dynamic Coefficients of Bearings 9.2 Calculation of Dynamic Coefficients of Bearings Using a Method with Linear Calculation Algorithm 9.3 Calculation of Dynamic Coefficients of Bearings Using a Method with Non‐linear Calculation Algorithm 9.4 Verification of Results Obtained 9.5 Summary
20 10 Comparison of Bearing Dynamic Coefficients Calculated with Different Methods
22 Appendix A A.1 Fast Fourier Transform Diagrams of Journal Displacement in Relation to Bearing Housings A.2 Journal Vibration Trajectories in Relation to Bearing Housings A.3 Acceleration of Vibrations of Bearing Supports during Start‐up A.4 Rotor Axial Alignment Report
23 Appendix B B.1 Fragments of Code of the Program Used for Processing the Signal from Experimental Tests B.2 Fragments of Code of the Program Used for Calculation of Dynamic Coefficients of Bearings on the Basis of Experimental Tests
24 Appendix C C.1 Journal Vibration Trajectories Calculated in KINWIR and LDW Software C.2 Journal Vibration Trajectories Calculated in NLDW Software
26 References
27 Index
