MACHINE DESIGN-1

Syllabus:

INTRODUCTION

The design process, the morphology of design, designing methods, concurrent engineering. (03 Hours)

DESIGN ANALYSIS (05 Hours)

Types of loads and stresses. Factor of safety types of failure, theories of failure, fatigue failure analysis, Soderberg and Goodman methods, estimation of life of a component. Wear failure , introduction to creep failure.

SELECTION OF MATERIAL (02 Hours)

Factors affecting material selection. ferrous, non-ferrous metals and alloys, plastics for machine parts.

MACHINE COMPONENTS (06 Hours)

Parts subjected to tension, compression, shear, bending and torsion – such as tie rods, push rods, levers, axels etc. Parts subjected to combined loads. Design of helical compression and extension springs, leaf springs.

JOINTS AND CONNECTIONS (06 Hours)

Pin Joints and cottered joints, riveted connections, welded joints.

SCREWS AND THREADED FASTNESS (06 Hours)

Types of Screw threads, Indian standard proportions, design of power screws, Threaded fastness types of bolts and connections, stresses and preloading of bolts. Flanged connections bolted connections.

SHAFTS (04 Hours)

Types of shafts, ASME code for design of shafts, deflection of shafts, critical speed, Design of keys and splines.

SIMPLE MACHINES (06 Hours)

Design of rigid and flexible couplings, screw jack, screw p ress, toggle jack, bearing puller, I.C. Engines connecting rod, I.C. engine valve gear.

THICK AND THIN CYLINDERS (04 Hours)

Shrink fitted and pressfitted connections.

MANUFACTURING CONSIDERATIONS (03 Hours)

Standardization, limits, fits and tolerance as per I.S. Specification, factors to be considered in design of castings, forgings and welded components.

(Total Lecture Hours: 45 +Tutorial Hrs: 15)

PRACTICALS

1. Design and drawing of cotter joint

2. Design and drawing of Knuckle joint

3. Design and drawing of any type of coupling

a. Flange coupling

b. Bush –pin type coupling

c. Rigid coupling

4. Design and drawing of screw jack

5. Design of Spring

6. Design of fasteners

7. Design of Levers

8. Design of transmission shaft

BOOKS RECOMMENDED

1. Bhandari V.B., “Design of Machine Elements”, Tata McGraw Hill, 1994.

2. Shigley Jospeh, “Mechanical Engineering Design”, McGraw Hill, 1989.

3. Patel R.C. and others, “Machine Design”, C. Jamnadas & Co., 1992.

4. Design Data (PSG College of Engg. & Tech.), DPV Printers, Coimbatore, 2000.

5. Nortan R.L., “Machine Design: An Integrated Approach ”, Prentice Hall, 2005.

Useful Links:

• Syllabus_Website: Machine Design-1 Syllabus
• Chapter 4 (Simple Stresses in Machine Parts)
• Chapter 5 (Torsional and Bending Stresses in Machine Parts)
• Chapter 6 (Variable Stresses in Machine Parts)
• Chapter 6 Notes
• Theories of Failure (SOM)
• Theories of Failure (PPT)
• boiler rivet
• Theory of failure
• MD Theory S.S.
• torsion of shaft
• MD1_Notes_1_Rutvik_Patel
• MD1_Notes_2_Rutvik_Patel
• stress strain, TOF
• Machine Design By Bhandari