04-29-2017, 02:53 AM
SYLLABUS:-
UNIT-I
Torsional Vibrations in Rotating Machinery: Modelling of rotating machinery shafting, Transfer matrix analysis for free vibrations, Excitation torque, Transient response in torsional vibration, Branched systems.
Torsional Vibrations in Reciprocating Machinery: Modelling of the reciprocating machine systems, Free vibration calculations, Excitation torque, Forced vibration, Cyclic irregularity, Finite element analysis by consistent mass matrix, Gear elements.
UNIT-II
Gyroscopic Effects: Gyroscopics of a spinning disk, Synchronous whirl of an overhung rotor, Rotor system with a coupling, Whirl speed analysis.
Bending Critical Speeds of Simple Shafts: Whirling of an unbalanced simple elastic rotor, Simple shafts with several disks, Transfer matrix analysis for bending critical speeds, Finite elements method, Effect of axial stiffness, Consistent mass matrix, Effect of axial torque, Effect of gear mesh stiffness.
UNIT-III
Rotors Mounted on Fluid Film Bearings: Simple rotor in fluid film bearings, Transfer matrix analysis of rotors in fluid film bearings, Transfer matrix analysis of rotors by distributed elements, Dual rotor system analysis.
Instability Due to Fluid Film Forces and Hysteresis: Instability of rotors mounted on fluid film bearings, rigid rotor instability, Instability of a flexible rotor, Instability threshold by transfer matrix method, internal hysteresis of shafts, Instability due to negative cross-coupled stiffness, Orbital analysis by transfer matrix method.
UNIT-IV
Shafts with Dissimilar Moments of Area: Stability of a shaft with dissimilar stiffness , Whirling of a shaft with dissimilar stiffness , Effect of disk unbalance , Effect of gravity on a balanced disk , Transient response by time marching technique.
Balancing of Rotors: Classification of rotors, rigid rotor classification and balancing criteria, balancing of rigid rotors, balancing of flexible rotors.
UNIT-I
Torsional Vibrations in Rotating Machinery: Modelling of rotating machinery shafting, Transfer matrix analysis for free vibrations, Excitation torque, Transient response in torsional vibration, Branched systems.
Torsional Vibrations in Reciprocating Machinery: Modelling of the reciprocating machine systems, Free vibration calculations, Excitation torque, Forced vibration, Cyclic irregularity, Finite element analysis by consistent mass matrix, Gear elements.
UNIT-II
Gyroscopic Effects: Gyroscopics of a spinning disk, Synchronous whirl of an overhung rotor, Rotor system with a coupling, Whirl speed analysis.
Bending Critical Speeds of Simple Shafts: Whirling of an unbalanced simple elastic rotor, Simple shafts with several disks, Transfer matrix analysis for bending critical speeds, Finite elements method, Effect of axial stiffness, Consistent mass matrix, Effect of axial torque, Effect of gear mesh stiffness.
UNIT-III
Rotors Mounted on Fluid Film Bearings: Simple rotor in fluid film bearings, Transfer matrix analysis of rotors in fluid film bearings, Transfer matrix analysis of rotors by distributed elements, Dual rotor system analysis.
Instability Due to Fluid Film Forces and Hysteresis: Instability of rotors mounted on fluid film bearings, rigid rotor instability, Instability of a flexible rotor, Instability threshold by transfer matrix method, internal hysteresis of shafts, Instability due to negative cross-coupled stiffness, Orbital analysis by transfer matrix method.
UNIT-IV
Shafts with Dissimilar Moments of Area: Stability of a shaft with dissimilar stiffness , Whirling of a shaft with dissimilar stiffness , Effect of disk unbalance , Effect of gravity on a balanced disk , Transient response by time marching technique.
Balancing of Rotors: Classification of rotors, rigid rotor classification and balancing criteria, balancing of rigid rotors, balancing of flexible rotors.
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