## MECHANICAL PRINCIPLES (FOUNDATION)

 SHE Level 1 SCQF Credit Points 20.00 ECTS Credit Points 10.00 Module Code M1H312787 Module Leader Martin MacDonald School INTO Subject INTO Trimester B (January start)

### Summary of Content

The aim of this module is to provide students with a foundation in the knowledge of mechanical engineering science and principles, and apply them to the design and analysis of engineering components and systems including thermofluid systems.

### Syllabus

The teaching syllabus will cover the following areas: Solid Mechanics: Force analysis applying static equilibrium, support reactions, shear force and bending moment diagrams, centroids and second moment of area for symmetrical sections, parallel axis theorem for unsymmetrical sections, direct stress and strain, elastic behaviour, shear stress, bending stress, factors of safety. Dynamics: Analysis of linear and non-linear motion for translational and angular systems, Newton's laws of motion, moment of inertia, radius of gyration, angular torque and power, centrifugal force, momentum and impulse, simple harmonic motion of a single degree-of-freedom system. Introduction to Thermofluids: Definition of a fluid. Ideal and real fluids. Perfect gases. Compressible and incompressible fluids. Dimensions and units. Distinction between a fluid and a solid. Shear stress, velocity gradient and viscosity. Newtonian and non-Newtonian fluids. Description of phase. Fluid as a liquid, gas or vapour. Fluids: Fluid statics. Pressure in static fluids. Measurement of pressure, manometry. Descriptive treatment of flow. Comparison of laminar and turbulent flow. Reynold's Number. Continuity, momentum and energy equations. Use of energy equation to analyse single pipe systems. Thermodynamics: Basic definitions of systems. The perfect gas. The equation of state for a perfect gas. The 1st law of thermodynamics. The non-flow energy equation. Application to constant volume, constant pressure, isothermal, isentropic and polytropic processes. Vapours, change of phase, saturation temperature, pressure, specific volume, enthalpy and entropy. Engineering Applications Design and build simple models based on underlying mechanical principles and design briefs. Basic workshop skills - machining and fabrication, metrology and assembly.

### Learning Outcomes

On completion of this module the student should be able to:1. apply the principles of static equilibrium to 2-dimensional force systems including beam analysis;2.. evaluate stress and strain in typical engineering components under the action of direct, lateral and thermal loading;3. apply the principles of kinematic and dynamic behaviour to particles and rigid bodies;4. understand the principles of simple harmonic motion and vibration;5. demonstrate an understanding of fluids and their basic properties including pressure measurement;6. analyse flows, pressures and energies in pipe systems;7. apply the principles of work and energy in compressible fluid flow systems;8. evaluate heat, work and energy terms for closed systems using the 1st law of thermodynamics;9. design and build simple engineering models;10. demonstrate an understanding of project management and the nature of team working.

### Teaching / Learning Strategy

The lectures will be used to convey the concepts of the principles covered, with suitable explanatory practical examples. The lecture material will be reinforced and consolidated through tutorial and laboratory sessions. Private study will be used to reinforce material delivered on relevant topics. Independent learning will be encouraged to satisfy the student's particular interests. Team working and building will be encourged.

Bolton,W., Mechanical Science. 3nd Edition, Blackwell Science, 2006. Gentle,R., Edwards,P. and Bolton,W., Mechanical Engineering Systems. Butterworth Heinemann, 2001. Johnson,A. and Sherwin,K., Foundations of Mechanical Engineering. Nelson Thornes, 2001. Hannah,J. and Hillier,M.J., Applied Mechanics. 3rd Edition, Longman, 1995. Bird, J and Ross, C, Mechanical Engineering Principles, Newnes Press. 2002. Eastop,T.D and McConkey.A., Applied Thermodynamics. 5th Edition, Longman, 2004.. Massey,B.S., Mechanics of Fluids. Van Nostrand Reinhold (UK). 8th Edition, Taylor and Francis, 2006. Major, H. Project Management, Financial TImes - 2003

### Transferrable Skills

Development of skills in problem analysis and solving, numerical analysis, laboratory experiments and measurements, and design considerations. Writing technical reports, presenting results - written, orally and visually. Team working, project management

### Module Structure

Activity Total Hours
Practicals (FT) 28.00
Tutorials (FT) 28.00
Independent Learning (FT) 98.00
Lectures (FT) 28.00
Assessment (FT) 18.00

### Assessment Methods

Component Duration Weighting Threshold Description
Exam (School) n/a 15.00 35% Minor Class test
Exam (School) 2.00 50.00 35% school exam
Coursework 1 n/a 20.00 35% Minor Logbook
Exam (School) n/a 15.00 35% Minor Class Test