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Design of Machine Elements
Full video link of DME :    • How to Pass Design of Machine Element...  
Unit-1
part-1:   • DESIGN OF MACHINE ELEMENTS | Unit-I |...  
part-2:   • DESIGN OF MACHINE ELEMENTS | Unit-I |...  
part-3:   • DESIGN OF MACHINE ELEMENTS | Unit-I |...  
Unit-2
part-1:   • DESIGN OF MACHINE ELEMENTS | Unit-II ...  
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DME Syllabus:
UNIT I STEADY STRESSES AND VARIABLE STRESSES IN MACHINE MEMBERS
Introduction to the design process - factors influencing machine design, selection of materials based on mechanical properties - Preferred numbers, fits and tolerances – Direct, Bending and torsional stress equations – Impact and shock loading – calculation of principle stresses for various load combinations, eccentric loading – curved beams – crane hook and ‘C’ frame- Factor of safety - theories of failure – Design based on strength and stiffness – stress concentration – Design for variable loading.
UNIT II SHAFTS AND COUPLINGS
Design of solid and hollow shafts based on strength, rigidity and critical speed – Keys, keyways and splines - Rigid and flexible couplings.
UNIT III TEMPORARY AND PERMANENT JOINTS
Threaded fastners - Bolted joints including eccentric loading, Knuckle joints, Cotter joints – Welded joints, riveted joints for structures - theory of bonded joints.
UNIT IV ENERGY STORING ELEMENTS AND ENGINE COMPONENTS
Various types of springs, optimization of helical springs - rubber springs - Flywheels considering stresses in rims and arms for engines and punching machines- Connecting Rods and crank shafts.
UNIT V BEARINGS
Sliding contact and rolling contact bearings - Hydrodynamic journal bearings, Sommerfeld Number, Raimondi and Boyd graphs, -- Selection of Rolling Contact bearings.

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