Dissertation > Excellent graduate degree dissertation topics show

Dynamic Characteristics Research on Bearing Wear of a Special Vehicle Transmission System

Author: YaoJianXiong
Tutor: TanJianPing
School: Central South University
Course: Mechanical Engineering
Keywords: Wear fault diagnosis clearance co-simulation
CLC: TH133.3
Type: Master's thesis
Year: 2013
Downloads: 19
Quote: 0
Read: Download Dissertation

Abstract


The runtime environment of a special vehicle transmission system has the characteristics of strong shock and vibration. Long time running will cause the bearing raceway surface to wear, the surface roughness to increase and the vibration and noise to increase. This paper takes the whole system as the research object, to study the influence law of bearing wear on transmission system dynamics characteristics.The main contents include:(1) The nonlinear dynamic model of the bearing rotor system is established. The contact-impact parameters are calculated by solving the bearing roller and outer ring raceway road compatibility equation. The rigid hybrid dynamics model of the bearing rotor system was established to get the dynamic characteristics of the different degree of bearing wear. The simulation results show: The absolute mean value of the base markers’vibration signal increases gradually with the increase of wear and tear clearance.(2) A bearing wear fault bench is built and the sensor placement program was optimized to extract the characteristic values of different degrees of wear. The values are compared with the simulation data. The results show that the law of characteristic values obtained by simulation agrees with the experiment result and a characteristic value that can represent the characteristic of bearing wear is obtained.(3) The cylindrical roller bearing wear kinetic model of a special vehicle driveline is established. The drive system’s dynamics response is simulated under the situation of large load and large impact. A test bench of drive train’s bearing wear fault is built to verify the simulation results.(4) The contact load spectrum of different levels of wear are extracted from the simulation results, based on the Archard fatigue wear model. Raceway wear of different levels of wear is studied. The bearing raceway wear morphology is reconstructed to analyze rolling weartrend under different degrees of wear.

Related Dissertations

  1. Reactive Hot-Pressing and Mechanical Properties of （ZrB2-ZrO2）/BN Composites,TB332
  2. Optimizition of Compositions and Processing Parameters and Wear Properties of Cemented Carbides YG11R Modified by Nanosized Rare Earth,TG135.5
  3. Technology of Filling Clearance and Optimizing the Bonds during Ultrasonic Brazing,TG454
  4. Research on the 6-Dof Fault Tolerant Control of the Vibration Isolation Platform with Eight Actuators,TB535.1
  5. The Design and Analysis of C Axis Feed Index Device of High Precision Heavy NC Machine Tool,TG659
  6. Research and Development of Wear Resistance for Physically Disabled Men Jackets,TS941.2
  7. Study of Androgynous Design in Modern Men’s Wear,TS941.2
  8. The Meaning of Blood Lactic Acid Dynamic Monitoring and Continuous Hemodynamic Monitoring of Severe Case Trauma Patients,R641
  9. Based on Fuzzy Neural Network Fault Diagnosis of Expert Systems,TP183
  10. The Application of C8051F310 Single-Chip to Improve the Braking Safety of Mine Hoist,TP368.1
  11. Real-time Pressure Monitoring and Fault Diagnosis of High-pressure Spray Descaling System,TG333
  12. Study on Ni-based Tenacious Wear-resistance Gradient Coating In-situ Prepared by Laser on the Surface of Crystallizer Copper Alloy,TF777
  13. The Preparation, Microstructure and Propertities of the New Type 3D-Meshy SiC/Cu-Fe Composite Material,TB33
  14. Preparation and Properties of Reactive Thermal Sprayed Ternary Boride Cermet Coatings,TG174.4
  15. The Research on Wear Mechanism of Sliding Electrical Contact and the Performance Improvement of Testing Machine,U225
  16. Study on Preparation Technology and Properties of Al2O3-TiB2 Solid-state Reaction Multiphase Ceramic Coating on AZ31B Alloy,TG174.44
  17. Study on Intelligent Diagnosis of Measuring Radar,TN957
  18. Development of Fault Diagnosis System for Turbine Shaft Based on Neural Network,TK267
  19. Interpretation of a Zen Extraordinary Wear More Clothes,TS941.2
  20. Structure and Performance of Fe-based Amorphous Coatings Prepared by HVAF and HVOF,TG174.4
  21. Uncertain Information Fusion Method Based on Random Sets and Application on Fault Diagnosis of Wind Turbine Generators,TM315

CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Moving parts > Bearing
© 2012 www.DissertationTopic.Net  Mobile