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Design of Machine Elements
Full video link of DME : https://youtu.be/1cmj6sQTKis
Unit-1
part-1:https://youtu.be/-oOnwHqY4J8
part-2:https://youtu.be/8swr248gh6I
part-3:https://youtu.be/wcAVyJ-K498
Unit-2
part-1:https://youtu.be/oQdbfn6qmhU
For more Details contact,
Prof.A.Aravindh:: 9952437464
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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