ED4003 Bearing Design and Rotor Dynamics Syllabus:
ED4003 Bearing Design and Rotor Dynamics Syllabus – Anna University PG Syllabus Regulation 2021
COURSE OBJECTIVES:
The main learning objective of this course is to prepare students for:
1. Apply and develop mathematical model of a system
2. Applying the design and suggest bearings for specific applications
3. Applying a fatigue life calculations for various types of bearings
4. Apply and analyze bearing behaviour
5. Study the dynamics of rotors mounted on Hydrodynamic Bearings
UNIT-I CLASSIFICATION AND SELECTION OF BEARINGS
Selection criteria – Dry and Boundary Lubrication Bearings-Hydrodynamic and Hydrostatic bearings-Electro Magnetic bearings – Dry bearings – Rolling Element bearings-Bearings for Precision. Applications-Foil Bearings-Special bearings- Selection of plain Bearing materials – Metallic and Non metallic bearings-Materials for rolling bearings
UNIT-II DESIGN OF FLUID FILM BEARINGS
Design and performance analysis of Thrust and Journal bearings – Full, partial, fixed and pivoted journal bearings design procedure-Minimum film thickness – lubricant flow and delivery – powerloss, Heat and temperature distribution calculations- Design based on Charts & Tables Design of Hydrostatic, Thrust and Journal bearings-Stiffness consideration-flow regulators and pump design in hydrostatic bearings-Foil bearings-Air Bearings
UNIT-III ROLLING CONTACTS SELECTION OF ROLLING BEARINGS
Contact Stresses in Rolling bearings-Centrifugal stresses-Elasto hydrodynamic lubrication-Fatique life calculations-Bearing operating temperature-Lubrication- Selection of lubricants-Internal clearance – Shaft and housing fit- -Mounting arrangements. Manufacturing methods-Ceramic bearings-Rolling bearing cages-bearing seals selection
UNIT-IV ROTOR DYNAMICS
Motion of the shaft in the bearing-Rotor supported on rigid and flexible supports-Campbell diagram, Rotor Dynamic Analyses- Un damped critical speed – Unbalance response- Damped eigenvalue analysis- Bearing stiffness and damping coefficients- Mechanics of Hydro dynamic Instability-HalffrequencywhirlandResonancewhipbearinginstabilityandOilWhirlTechnologies to Improve the Stability of Rotor-bearing Systems- Design configurations of stable journal bearings
UNIT-V DYNAMICS OF ROTORS MOUNTED ON HYDRO DYNAMIC BEARINGS
Hydrodynamic Lubrication equation for dynamic loadings-Squeeze film effects in journal bearings and thrust bearings-Rotating loads, alternating and impulse loads in journal bearings–Journal Centre Trajectory-Analysis of short bearings under dynamic conditions-Finite difference solution for dynamic conditions
COURSE OUTCOMES:
On Completion of the course the student will be able to
CO1 Understand application of various types of bearings and their operating principles
CO2 Design and suggest bearings for specific applications
CO3 Perform fatigue life calculations for various types of bearings,
CO4 understand and analyze bearing behavior
CO5 study the dynamics of rotors mounted on Hydrodynamic Bearings
REFERENCES:
1. Neale,M.J. “Tribology Hand Book”, Butterworth Heinemann, United Kingdom2001
2. Cameron,A.“BasicLubricationTheory”,EllisHerwardLtd.,UK,1981
3. Halling,J.(Editor)–“Principles of Tribology“,Macmillian–1984
4. WilliamsJ.A.“EngineeringTribology”,OxfordUniv.Press,1994
5. S.K.Basu, S. N. Sengupta & B. B.Ahuja ,”Fundamentals of Tribology”, Prentice – Hall of India Pvt Ltd, New Delhi,2005
6 G.W.Stachowiak&A.W.Batchelor,EngineeringTribology,Butterworth-Heinemann,UK,2005