Factor influencing machine design, selection of materials based on mechanical properties – Direct, bending and torsion stress equations – Impact and shock loading – Calculation of principle stresses for various load combinations, eccentric bending – Factor of safety – Theories of failure – Stress concentration – Fatigue strength and the S-N diagram – Soderberg, Goodman and Gerber relations.
Design of solid and hollow shafts based on strength and rigidity– Design of keys and key ways – Design of rigid and flexible couplings
Review of gear fundamentals – Interference - Gear forces - Dimensions of a spur gear pair- Dimensions of helical gear pair- Design of spur and helical gears – Nomenclature of worm and bevel gears(Theoretical treatment only)
Design of helical and leaf springs under constant and varying loads – Design of knuckle and cotter joints.
Selection of bearings – Sliding contact and rolling contact types – Cubic mean load – Design of journal bearing – McKee’s equation – Lubrication in journal bearings – Calculation of bearing dimensions – Design of ball bearings.
Reference Book:
1. Sundararajamoorthy T. V. Shanmugam .N, “Machine Designâ€, Anuradha Publications, Chennai, 2003 (Unit I, II). 2. Robert C. Juvinall and Kurt M. Marshek, “Fundamentals of Machine Designâ€, 7th Edition, Wiley, 2016 (Unit II, III). 3. Alfred Hall, Halowenko, A and Laughlin, H., “Machine Designâ€, 3rd Edition Tata McGraw-Hill BookCo.(Schaums Outline), New Delhi, 2010(Unit II,IV,V). 4. Bernard Hamrock, Steven Schmid,Bo Jacobson, “Fundamentals of Machine Elementsâ€,2nd Edition, Tata McGraw-Hill Book Co, New Delhi, 2006 (Unit IV,V). 5. Orthwein W, “Machine Component Designâ€, 3rd Edition Jaico Publishing Co, New Delhi, 2003(Unit II, III, IV, V).
Text Book:
Bhandari V, “Design of Machine Elementsâ€, 4rd Edition, Tata McGraw-Hill Book Co, New Delhi, 2016 (Unit I, II, III, IV& V). Prabhu T J, “Design of Transmission Systemsâ€, private publication, 1999 (Unit III&V).
