4ME1: DESIGN OF MACHINE ELEMENTS I

Unit 1
Materials: Properties and IS coding of various materials, Selection of material from properties and economic aspects. Manufacturing Aspects in Design: Selection of manufacturing processes on the basis of design and economy, Influence of rate of production, standard size, Influence of limits, fits tolerances and surface finish, Change in the shape of the designed element to facilitate its production, design of castings, working drawing.
Unit 2
Design for Strength: Allowable stresses, detailed discussion on factor of safety (factor of ignorance), Stress concentration, causes and mitigation, Introduction of various design considerations like strength, stiffness, weight, cost, space etc. concept of fatigue failures, design of machine elements subjected to direct stress, pin, cotter and keyed joints, design of screw fastening.
Unit 3
Design of Members in Bending: Beams, levers and laminated springs.
Unit 4
Design of Members in Torsion : Shafts and shaft couplings.
Unit 5
Design of Shafts and Brackets Under Combined Stresses: calculation of transverse and torsional deflections, screw fasteners subjected to eccentric loading.

Suggested Readings:
1. Mechanical Machine Design, Bahl and Goel, Standard Publishers Distributors.
2. Design of Machine Elements, Bhandari V.B, Tata McGraw-Hill, New Delhi.
3. Machine Design, Sharma and Aggarwal, S.K.Kataria and Sons, Delhi.
4. Mechanical Engg Design, Shigley, Mischke, Budynas and Nisbett, Tata McGraw-Hill.
5. Design of Machine Elements, Sharma and Purohit, Prentice Hall India.
6. Machine Design, Kulkarni S. G., Tata McGraw Hill
7. A Text Book of Machine Design, Karwa A., Laxmi Publications.
8. Machine Design, Hall, Holwenko and Laughlin, Schaum's Outlines Series, Tata McGraw Hill.