Mechanical Design 7759G Home


# Topic, Notes, Assignment % Assessment Type
1. Beams M/C test #10307*,  10 M/C tests
2. Torsion M/C test #10308   10 M/C tests
3. Levers 10 Hand-in
4. Shaft Design
10 Hand-in
5. Coupling Design 10 Hand-in
6. Rolling Contact Bearings 10 Hand-in
7. Bolted Connections 10 Hand-in
8. Welded Connections 10 Hand-in
9. Helical Springs (round wire) 10 Hand-in
10. Power Screws 10 Hand-in
  100
*Note:  If student is unable to pass #10307 Bending Stress, they will need to do the pre-requisite tests: #10305 Area moments, #10306 Bending Moment.
INFO:
Keys and Splines


1.   Introduction
                 Revision of design procedures
                 Stress and strain
                    Tension
                    Compression
                    Bearing
                    Shear
                 Fatigue and stress concentration factor
                 Factor of safety
                 Fits and tolerances
                 Australian standards
                 Material specifications
                 Drawing requirements

2.  Levers
                 Design of a simple lever
                 Bell crank lever
                 Materials used
                 Allowable stress

3.  Keys and Splines
                 Characteristics and merits of types in common use
                 Standard proportions of keys
                 Shear stress
                 Bearing stress
                 Length of keys and splines

4.  Couplings
                 Types
                 Analysis of components
                 Stresses
                    Shear
                    Bearing
                    Bending
                 Standard proportions of flanged couplings and
                    knuckle joints
                 Proportion of hub and key

5.  Journal Bearings
                Elementary journal bearing design
                Bearing clearance
                Length to diameter ratio
                Bearing pressure
                Position of oil holes and grooves
                Heat generated and dissipated
                Allowable operating temperatures of
                    lubricants

6.  Rolling Contact Bearings
                Types of bearings available
                Selection of bearing types and size
                Combined bearing load
                Axial and radial loads
                Static and dynamic capacity
                Requisite bearing life for different types of machines
                Permissible speeds of operation

7.  Bolted Connections
                 Types
                 Standard bolt sizes
                 Allowable stresses
                 Fabrication of joints
                 Modes of failure
                 Analysis of eccentrically loaded joints

8.  Welded Connections
                Practical and design consideration of welded connections
                Allowable stresses on welds
                Design of fillet and butt welds
                Eccentrically loaded joints
                Effect of symmetric and unsymmetrical weld patterns

9.  Helical Springs (round wire)
                Types
                Allowable working stresses
                Stiffness
                Wahl correction factor
                Deflection
                Spring rate
                Spring index
                Spring ends
                Typical specifications required for manufacture
                Spring design by nomograms

10. Translation Screws
                Types used
                Screw proportions
                Coefficient of friction
                Efficiency
                Conditions for self locking
                Stresses in screw threads
                Bearing pressures
                Depth of nut
                Column effect


Old Links
-Bolted Joints
-Welded Joints
-Shafts
Properties of commercial grade steels
Key Design
Lever Design
2005 Design Project
Knuckle Joint Design
Coupling Design