Dissertation > Excellent graduate degree dissertation topics show

Nonlinear Dynamic Response and Stability Analysis of Rotor-bearing Systems with Samcef/Rotor

Author: LiuChengQian
Tutor: CaoShuQian
School: Tianjin University
Course: General and Fundamental Mechanics
Keywords: Rotor - bearing system Nonlinear Oil Film Force Samcef / Rotor Nonlinear Dynamics
CLC: TH113
Type: Master's thesis
Year: 2010
Downloads: 137
Quote: 0
Read: Download Dissertation

Abstract


Rotating machinery occupies an important position in the areas of transportation , power , mechanical , and aerospace , is also one of the key equipment of the pillar industries of the national economy . With the production and the development of science and technology for the study of nonlinear dynamical behavior of the rotor system , has become a hot research field . In this paper, the finite element analysis software Samcef / Rotor studied the nonlinear dynamic response of a single cross and double- cross the rotor - bearing system . With the movement patterns of the time course of the Orbit , the phase diagram , the Poincare map and spectrogram analysis system . Thesis work includes the following sections: ( 1 ) Research of the nonlinear dynamics of the rotor - bearing system are reviewed ; 2 . Samcef / Rotor single span rotor - bearing system model under different speed the phase diagram of the motion of the rotor , the Poincare map , time history curve and the axis trajectory and speed as the bifurcation parameter bifurcation diagram . The results showed that : As the speed of change , the system periodic motion , the dynamic behavior of the Almost Periodic movement and then to periodic motion ; 3 . Rotor - bearing system nonlinear dynamic response of double cross different speed rotor movement the phase diagram of the Poincare map , time history curve and the axis trajectory and speed as a parameter bifurcation diagram . The results showed that : As the speed of change , the system periodic motion to the dynamic behavior of the Almost Periodic movement ; 4 . Study the impact of the phase angle between the average film thickness of the bearing , the bearing width and quality of the system dynamic response . The results showed that the oil film thickness increases , system instability , instability speed advance . Through this study , have a more in-depth understanding of the rotor - bearing system under the force of the oil film instability mechanism .

Related Dissertations

  1. The 40Hz EEG studies of the patients with Alzheimer short-term memory , graphics and characters,R749.16
  2. EEG analysis in the study of cognitive function,R318.0
  3. The Dynamic Analysis of an Air Compressor Rotor Bearing System,TH113
  4. Research on the Nonlinear Dynamics Analysis of Regenerative Tool Chatter,O322
  5. Pilot Study of Active Control on Vibration of Multi-Tray Flexible Rotor Bearings System,TH113.1
  6. Nonlinear Dynamical Detection of the Acoustic Object,TN929.3
  7. Large deflection space beam static , dynamic modeling , analysis and calculation,O342
  8. Non-periodic Sensitivity" in Substantia Nigra Compacta Neurons,Q42
  9. Voiceprint analysis of nonlinear dynamics method study,R318.01
  10. Dynamics Analysis of the Deep-towed Systems,U674.18
  11. The Pattern Recognition of Mechanical Failure Based on Nonlinear Time Series,TP391.41
  12. Nonlinear Dynamic Analysis of a High-parameter Turbo Rotor Model,TK14
  13. CFD-based sliding bearing transient flow field,TH133.31
  14. The rotor coupling system with the leaves of the viscoelastic damper of aeroelastic dynamics study,V211.4
  15. Gear system dynamics analysis and computer simulation,TH132.41
  16. Flexible multibody system dynamics modeling , price cuts and fine calculation,O302
  17. Modal Analysis and Control of the Vibration about the Flexible Rotor-Bearing System,TH113
  18. Research on the Nonlinear Dynamics of Rotor-Bearing System of Turbine,TK261
  19. The Study of Ship with Nonlinear Rolling in Waves,U661.3
  20. Some Problems of Nonlinear Dynamic on the Rotor System with Multi-Faults,TH113

CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanics (mechanical design of the basic theory ) > Mechanical kinetics
© 2012 www.DissertationTopic.Net  Mobile