DE4302                             MECHANICS

Level 4                                             Credits 15                                            Version July 2010

LEARNING TIME

RECOMMENDED PRE-REQUISITE

DE4101 Engineering Fundamentals

DE4102 Engineering Mathematics 1

DE4103 Technical Literacy

RECOMMENDED CO-REQUISITE

Nil

AIM/PURPOSE

To develop a sound understanding of the principles of mechanics.

LEARNING OUTCOMES

On successful completion of this course, the student should be able to:

1.            Demonstrate the correct use of analysing forces and moments in mechanical systems.

2.            Calculate indirect stresses (bending and torsion) in mechanical components and select appropriate sections from standard tables.

3.            Demonstrate an understanding of energy in mechanical system, including the Conservation of energy theory.

4.            Demonstrate an understanding of the forces, moments and torques resulting from linear acceleration, rotational acceleration, and centripetal acceleration.

INDICATIVE CONTENT

• FBD for beams with point and UD loads
• Shear Force and Bending Moment diagrams.  Points of contra flexure
• Equivalent single force to multiple forces
• Equivalent force and moment
• FDB for non-concurrent force systems.
• Pin-jointed frameworks by graphical and analytical techniques. Bow’s notation.
• Second moments of area, parallel axis theorem, section modulus.
• Bending stresses. Selection of sections from Steel Property Tables.
• Combined bending and direct normal stress applications
• Torsional shear stresses and angular displacements in solid and hollow shafts. Polar second moments of area.
• Work and Power, Efficiency
• Conservation of energy; Potential, Kinetic and strain energy, Linear and rotational.
• Inertia forces, Dynamic FBD (blocks on slope with friction and acceleration)
• Centripetal and centrifugal forces and applications, bodies cornering.
• Moments of inertia, radius of gyration and applications e.g. flywheels.