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:
- Mechanical Vibrations-JP Den Hartog-1956-070163898-McGraw-Hill
- A Handbook on Torsional Vibration-EJ Nestorides-1958-none-Cambridge University Press
- Flexural Vibrations Of Rotating Shafts-FM Dimentberg-1961-none-Butterworths
- Theory of Hydrodynamic Lubrication-O Pinkus, B Sternlicht-1961- -McGraw-Hill
- Some Problems Of Rotor Dynamics-A Tondl-1965-0317262033 0608123781-Chapman & Hall
- Dynamic Stability Of Rotor-Bearing Systems-EJ Gunter-1966-NAS 1.21:113-NASA SP-113
- Critical Speeds and Response of Flexible Rotor Systems-R. L. Eshleman-1972- -ASME
- Analytical Methods In Rotor Dynamics-AD Dimarogonas, SA Paipetis-1983-0853341990-Applied Science
- Rotor Dynamics-JS Rao-1983-0470274484-Halsted Press
- Balancing Of Rigid And Flexible Rotors-Neville F. Rieger-1986-85600519-Shock and Vibration Information Center
- Rotordynamics Of Turbomachinery-JM Vance-1988-0471802581-Wiley
- Dynamics of Rotor Bearing Systems-MJ Goodwin-1989-0046210326-Thomson Learning
- Journal Bearing Data Book-T Someya-1989-354017074X 038717074X-Springer-Verlag
- Turbomachinery Rotordynamics-Phenomena, Modeling And Analysis-Dara Childs-1993-047153840X-Wiley
- Dynamics Of Rotors And Foundations-E Kramer-1993-3540557253(0387557253-Springer-Verlag)
- Rotordynamics Prediction In Engineering-M Lalanne, G Ferraris-1998-0471972886-Wiley
- Handbook Of Rotordynamics-FF Ehrich-1998-0070193304-McGraw-Hill
- Fundamentals of Rotating Machinery Diagnostics-Donald E Bently, Charles Hatch-2002-0971408106-Bentley Pressurized Bearing Press
- Rotor Dynamics-Agnes Muszynska-2005-0824723996-Taylor & Francis
- Magnetic Bearings Theory, Design, and Application to Rotating Machinery-Gerhard Schweitzer and Eric H. Maslen, editors-2009-3642004962-Springer
