Mechanical Engineering BEng (Hons)

Module EN0100 - Introductory Mechanics

(20.00 Credits)

SYNOPSIS OF MODULE
This module introduces the application of Newton’s laws of mechanics in static and dynamic systems. Alternative methods of analysing dynamic systems such as work/energy and impulse are also introduced together with a basic introduction to vibrations. The basic principles of stress and strain in one dimension are introduced. The theory of direct shear, bending and torsional stress is developed and used in design calculations along with experimental techniques for measuring these values.

The module will be delivered through lectures and knowledge will be consolidated in seminar and laboratory sessions. Summative assessment will be via individual coursework and an examination. The individual coursework will take the form of a written in-class assessment which will cover the subject knowledge delivered in the lectures and its experimental application.
A formative assessment will be conducted in the form of problem solving and/or multiple choice questions. Formative feedback will also be provided on seminar and laboratory work.




INDICATIVE READING LIST OR OTHER LEARNING RESOURCES
1. Recommendations for purchase by students
N/A
2. Books
• Benham, P. P. and Crawford, R. W. and Armstrong C. G. (1996). Mechanics of Engineering Materials. Longman

• Johnson, A. and Sherwin, K. (2001). Foundations of Mechanical Engineering. Chapman & Hall

• Bedford, A. M. and Fowler, W. (2004). Engineering Mechanics (Statics), 5th Edition. Prentice-Hall

• Bedford, A. M. and Fowler, W. (2004). Engineering Mechanics (Dynamics), 4th Edition. Prentice-Hall

• Gere, J. M. and Timoshenko, S.P. (1997). Mechanics of Materials, 4th ed. PWS Publishing Co

3. Journal Articles

N/A
4. Journals and Newspaper Titles
N/A
5. Databases and Websites
N/A
6. Any Other Resources
N/A




OUTLINE SYLLABUS
Force
Force as a vector quantity. Components of a force. Resultant of concurrent force system. Moment of a force. Couples. Resultant of a coplanar force system.

Analysis of Plane Statics
Conditions for equilibrium. Principles of isolation - free body diagrams. Two and three force problems.

Applications of Plane Statics
Problems involving friction. Frames, methods of joints and sections.

Principles of Stress and Strain
Direct stress: load, deflection, stress and strain. Tensile testing and material properties. Young’s modulus and Poisson’s Ratio. Factor of safety. Shear stress: complementary shear. Modulus of rigidity.

Applications in One-Dimension
Direct stress in compound bar and temperature effects. Impact loads. Bolts and rivets.

Geometric Properties of Symmetric Sections
Determination of centroid, second moment of area and polar second moment of area.

Shear Force and Bending Moments
Definitions, diagrams, concentrated and uniformly distributed loads. Combined loads and couples.

Kinematics
Rectilinear motion, uniform and non-uniform acceleration. Angular motion in a circle, uniform and non-uniform acceleration. Simple examples of combined motion, e.g. rolling. Simple harmonic motion.

Bending of Beams
Pure bending

Bending stresses in hollow tubes and I-beams. Combined direct and bending stresses.

Torsion in Shafts
Torque equation, Torque and power transmission.

Kinetics
Newton’s Laws. Equations of motion for a particle-rectilinear and circular motion. Equation of motion for a rigid body-rectilinear and curvilinear motion, fixed axis rotation, general plane motion. Moment of inertia.

Impulse and Momentum
Equations for particles and rigid bodies. Moment of Momentum and Conservation of momentum.

Work and Energy
The work-energy equation for particles and rigid bodies including kinetic, elastic potential and gravitation potential energy. Friction effect. Conservation of energy. Power.




AIMS OF MODULE
To introduce students to the fundamental principles of mechanics and to develop competence in applying such principles to determine forces acting on and within bodies and their consequent motion.


LEARNING OUTCOMES
Upon completion of this module the student will be able to:

1. Apply scientific principles and methodology to analyse forces.


2. Apply mathematical principles to analyse systems of static and dynamic forces.

3. Apply appropriate engineering principles to analyse the effects of forces and moments on the motion of a body.

4. Manage the design process by performing appropriate design calculations and evaluating the outcomes.




PREREQUISITES
None


COREQUISITE(S)
None


DISTANCE LEARNING DELIVERY
None


LEARNING AND TEACHING STRATEGY
The module will be delivered using formal lectures, seminars and laboratory sessions. The lectures will cover relevant theory with reference to relevant texts.
A number of seminars and laboratories will be used to enhance the student’s interactive learning experience. The seminars will include exercises designed to develop the learner’s experience of problem solving. During the laboratory sessions students will develop experience of real systems and applications. Formative feedback will be provided on the work undertaken in the seminars and laboratories.



ASSESSMENT AND FEEDBACK STRATEGY
a Summative assessment and rationale for tasks

The summative assessment will be through individual coursework (40%) and an examination (60%). The individual coursework will take the form of a written in-class assessment which will cover the subject knowledge delivered in the lectures and the experimental application.

b. Additional formative assessment – detail of process and rationale

A formative assessment will be conducted in the form of problem solving and/or multiple choice questions. The intension is to keep students engaged and to provide feedback on their understanding of the material delivered. Formative feedback will also be provided on seminar and laboratory work.

c. Indication of how students will get feedback and how this will support their learning

Students will be given written feedback on the summative and verbal / written feedback on the formative assessments which they can feed forward into future assessment in this subject area.

Verbal formative feedback will be provided during problem solving sessions in seminars and during the laboratories.

Feedback on the exam will be provided following the usual school procedure.




IMPLICATIONS FOR CHOICE
None

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