Lau Yiu Kee. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 142-146). / Abstracts in English and Chinese. / LIST OF TABLES --- p.viii / LIST OF FIGURES --- p.x / Chapter 1. --- INTRODUCTION --- p.1 / Chapter 1.1 --- Motivation --- p.1 / Chapter 1.2 --- Railway Vehicle Suspension --- p.2 / Chapter 1.3 --- Semi-Active Magnetorheological Fluid Damper --- p.3 / Chapter 1.4 --- Research Objectives --- p.4 / Chapter 1.5 --- Thesis Outline --- p.5 / Chapter 2. --- BACKGROUND --- p.7 / Chapter 2.1 --- MR Fluids --- p.7 / Chapter 2.1.1 --- Composition of MR fluids --- p.7 / Chapter 2.1.2 --- Properties and characteristics of MR fluids --- p.8 / Chapter 2.1.3 --- Literature review --- p.13 / Chapter 2.2 --- MR Devices --- p.13 / Chapter 2.2.1 --- Advantages of MR devices --- p.13 / Chapter 2.2.2 --- Common device geometries --- p.14 / Chapter 2.2.3 --- MR fluid based applications --- p.15 / Chapter 2.2.4 --- Literature review --- p.19 / Chapter 2.3 --- Overview of Railway Vehicles --- p.21 / Chapter 2.3.1 --- "Passive, active and semi-active suspensions" --- p.21 / Chapter 2.3.2 --- Basic railway vehicle structure --- p.23 / Chapter 2.3.3 --- Literature review --- p.25 / Chapter 2.4 --- Railway Vehicle Suspension Systems --- p.25 / Chapter 2.4.1 --- Primary vertical suspension --- p.25 / Chapter 2.4.2 --- Secondary vertical suspension --- p.27 / Chapter 2.4.3 --- Secondary lateral suspension --- p.27 / Chapter 2.4.4 --- Yaw suspension --- p.28 / Chapter 3. --- DESIGN CONSIDERATIONS FOR MR DAMPERS --- p.29 / Chapter 3.1 --- Overview of Existing MR Dampers --- p.29 / Chapter 3.1.1 --- Monotube MR fluid damper --- p.29 / Chapter 3.1.2 --- Double-ended MR damper --- p.31 / Chapter 3.1.3 --- Bellow type MR damper --- p.35 / Chapter 3.2 --- Optimal Design and Configuration of Magnetic Circuit --- p.35 / Chapter 3.2.1 --- Magnetic circuit and magnetic field orientation --- p.35 / Chapter 3.2.2 --- Physical dimension of MR damper --- p.38 / Chapter 3.2.3 --- Connection polarity of electromagnetic circuit --- p.40 / Chapter 3.3 --- Basic Geometry Design Considerations --- p.43 / Chapter 3.3.1 --- Controllable force and dynamic range --- p.43 / Chapter 3.3.2 --- Geometry constraints --- p.45 / Chapter 3.3.3 --- Magnetic circuit design --- p.47 / Chapter 4. --- DEVELOPMENT AND FABRICATION OF MR DAMPERS --- p.51 / Chapter 4.1 --- Pneumatic Air Cylinder --- p.51 / Chapter 4.2 --- Fabrication Process of Double-Ended MR Dampers --- p.55 / Chapter 4.2.1 --- Modifications on the pneumatic air cylinder --- p.55 / Chapter 4.2.2 --- Manufacturing processes of the piston sleeve --- p.56 / Chapter 4.2.3 --- Modification processes of the original piston rod --- p.59 / Chapter 4.2.4 --- Modification of the piston staging area --- p.60 / Chapter 4.2.5 --- Copper wire wrapping and damper assembling --- p.63 / Chapter 5. --- EXPERIMENTAL SETUP AND RESULTS --- p.66 / Chapter 5.1 --- Experimental Setup for the Double-Ended MR Damper --- p.66 / Chapter 5.1.1 --- Instron 8801 loading machine --- p.66 / Chapter 5.1.2 --- Experimental setup for testing the MR damper --- p.67 / Chapter 5.2 --- Force-Lag Phenomenon of MR Damper --- p.70 / Chapter 5.2.1 --- Force-lag phenomenon --- p.70 / Chapter 5.2.2 --- Reasons of the force-lag phenomenon --- p.73 / Chapter 5.2.3 --- Methods to eliminate the force-lag phenomenon --- p.76 / Chapter 5.2.4 --- Setup for hydraulic pump system --- p.77 / Chapter 5.2.5 --- Results and effects of the pressurized MR damper --- p.79 / Chapter 5.3 --- Experimental Results for Testing the MR Damper --- p.83 / Chapter 6. --- SIMULATION RESULTS OF SEMI-ACTIVE TRAIN SUSPENSION --- p.87 / Chapter 6.1 --- MR Damper Model --- p.87 / Chapter 6.2 --- Rail Vehicle Model --- p.92 / Chapter 6.3 --- Semi-Active Railway Suspension --- p.94 / Chapter 6.3.1 --- Lateral vibration on the train --- p.94 / Chapter 6.3.2 --- Semi-active control strategy --- p.95 / Chapter 6.4 --- Simulation Results --- p.98 / Chapter 6.4.1 --- Lower sway mode excitation --- p.99 / Chapter 6.4.2 --- Upper sway mode excitation --- p.105 / Chapter 6.4.3 --- Mixed sway mode excitation --- p.110 / Chapter 6.4.4 --- BR high speed assault course --- p.116 / Chapter 6.4.5 --- Discussions --- p.124 / Chapter 6.5 --- Effects of Vibration on Ride Comfort --- p.128 / Chapter 7. --- CONCLUSIONS --- p.134 / APPENDIX --- p.136 / BIBLIOGRAPHY --- p.142
| Identifer | oai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_324914 |
| Date | January 2004 |
| Contributors | Lau, Yiu Kee., Chinese University of Hong Kong Graduate School. Division of Automation and Computer-Aided Engineering. |
| Source Sets | The Chinese University of Hong Kong |
| Language | English, Chinese |
| Detected Language | English |
| Type | Text, bibliography |
| Format | print, xvi, 146 leaves : ill. ; 30 cm. |
| Rights | Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
Page generated in 0.0021 seconds