Mechanical Engineering

Indian Institute of Technology Kanpur

ME757A
Dynamics of Rotating Machinary
Credits:
3L-0T-0L-0D [9 Credits]
Course Contents:

Rotor-bearing interaction. Flexural vibration, critical speeds of shafts, Effects of anisotropic bearings, unbalanced response of an assymetric shaft. Gyroscopic effects. Aerodynamic effects. Equivalent discrete system. Geared and branched systems. Fluid film bearings: Steady state characteristics of bearings. Rigid and flexible rotor balancing. Measurement techniques.

Lecturewise Breakup:(number of 55 mins lectures in brackets)
Introduction [1]
Review of Vibrations [3]
Modelling and Bending Critical Speeds of Rotors [2]
Whirling Phenomenon  
Rigid rotors in rigid supports  
Flexible rotors in rigid supports  
Flexible rotors in flexible supports  
Rolling Element Bearings [2]
Contact Forces  
Deformations, Stiffness and Damping  
Hydrodynamic Bearings [4]
Mechanism of Pressure Development in a Fluid Film  
Reynold's Equation  
Steady State Solution for Short Bearing  
Dynamically loaded bearings and stiffness and damping coefficients  
Squeeze Film Bearing  
Squeeze Film Bearing and Orbital Motion  
Matrix Methods [4]
Field and Point Matrices  
Out of balance response of rotors with rigid end supports  
Rotors with overhangs  
Unbalance response by FEM  
Torsional Vibration of Rotors [4]
Modelling and transfer matrix analysis for free vibrations  
Variable Stiffness in Torsional Vibrations  
Excitation torques and transient response  
Branched and Geared Systems  
Torsional vibrations in reciprocating machinery  
Higher order effects and Stability [12]
Hill's Equation, Mathieu's Equation, Strutt Diagram  
Routh Hurwitz criterion  
Shafts with dissimilar moments of inertia  
Effects of Gravity  
Internal Hysteresis of Shafts  
Rigid Rotor Instability  
Instability of rotors mounted in fluid film bearings  
Instability of flexible rotors  
Instability due to negative cross-coupling  
Instability in torsional vibrations  
Gyroscopic Effects  
Rotor Balancing [4]
Classification of Rotors  
Rigid rotor balancing  
Flexible rotor balancing  
Monitoring and Diagnosis [4]
Faults in rotating machinery  
Instrumentation and Data Acquisition  
Time and Frequency domain characteristics  
Knowledge base and expert systems  
Total [40]
References:
  1. Mechanical Vibrations-JP Den Hartog-1956-070163898-McGraw-Hill
  2. A Handbook on Torsional Vibration-EJ Nestorides-1958-none-Cambridge University Press
  3. Flexural Vibrations Of Rotating Shafts-FM Dimentberg-1961-none-Butterworths
  4. Theory of Hydrodynamic Lubrication-O Pinkus, B Sternlicht-1961- -McGraw-Hill
  5. Some Problems Of Rotor Dynamics-A Tondl-1965-0317262033 0608123781-Chapman & Hall
  6. Dynamic Stability Of Rotor-Bearing Systems-EJ Gunter-1966-NAS 1.21:113-NASA SP-113
  7. Critical Speeds and Response of Flexible Rotor Systems-R. L. Eshleman-1972- -ASME
  8. Analytical Methods In Rotor Dynamics-AD Dimarogonas, SA Paipetis-1983-0853341990-Applied Science
  9. Rotor Dynamics-JS Rao-1983-0470274484-Halsted Press
  10. Balancing Of Rigid And Flexible Rotors-Neville F. Rieger-1986-85600519-Shock and Vibration Information Center
  11. Rotordynamics Of Turbomachinery-JM Vance-1988-0471802581-Wiley
  12. Dynamics of Rotor Bearing Systems-MJ Goodwin-1989-0046210326-Thomson Learning
  13. Journal Bearing Data Book-T Someya-1989-354017074X 038717074X-Springer-Verlag
  14. Turbomachinery Rotordynamics-Phenomena, Modeling And Analysis-Dara Childs-1993-047153840X-Wiley
  15. Dynamics Of Rotors And Foundations-E Kramer-1993-3540557253(0387557253-Springer-Verlag)
  16. Rotordynamics Prediction In Engineering-M Lalanne, G Ferraris-1998-0471972886-Wiley
  17. Handbook Of Rotordynamics-FF Ehrich-1998-0070193304-McGraw-Hill
  18. Fundamentals of Rotating Machinery Diagnostics-Donald E Bently, Charles Hatch-2002-0971408106-Bentley Pressurized Bearing Press
  19. Rotor Dynamics-Agnes Muszynska-2005-0824723996-Taylor & Francis
  20. Magnetic Bearings Theory, Design, and Application to Rotating Machinery-Gerhard Schweitzer and Eric H. Maslen, editors-2009-3642004962-Springer