| Short Title: | Design 4 |
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| Full Title: | Design 4 |
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| Reviewed By: | FIONA CRANLEY |
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| Description: | This module aims to enable the student to use an analytical approach to a variety of design tasks. This is based on applying computer based design tools and resources to the design task and presenting a parallel verification of their design work on paper in compliance with good professional practice. |
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| Learning Outcomes: |
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| On successful completion of this module the learner will be able to | - Describe a given problem (structure /
loadcase) in terms of the fundamental nature
of loading on the components to be analysed.
- Explain the rationale behind assumptions
used in the analysis.
- Develop design solutions given the interrelationships
of materials selection,
component design, and the integral nature of
product design and associated mechanical
design.
- Differentiate between dynamic and static load
conditions (e.g. suddenly applied loads).
- Evaluate dynamic design problems covering a
number of different mechanical design
situations and simple dynamic loadings.
- Describe and apply different types of
assembly design techniques: tolerance
analysis, kinematic analysis, interference
checking, surface loads, contact loads.
- Explain the workflow required to create a freeform surface model of an object. Differentiate between explicit and implicit freeform modelling techniques.
- Explain the analysis process in the context of
product development and mechanical design
in compliance with the requirements for CE
marking.
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Module Content & Assessment| Content |
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Analysis methodologies: Developing an understanding of real world situations, manual analysis methodologies complementing computer based analysis tools and physical experiments. Assembly Modelling: Application of advanced mechanical design tools for assembly assessment, design and mechanical performance simulation from
the following: linkage and mechanism design, tolerance analysis,
interference checking, kinematics modelling. Assembly analysis: Contact based finite element analysis, contact boundary conditions, constraints/restraints, element types, analysis methods, post-processing
and interpretation of acceleration, velocity and displacement
results. Vibration analysis: The application of vibration analysis, the use of springs and dampers,
fatigue analysis. Dynamic analysis: Impact analysis, shock absorption, plastic buckling, plastic crumpling. Rotating systems: Rotating disk stress field. Loads on rotating assemblies. Freeform design: Implicit freeform modelling techniques such as warping, subdivision modelling. Explicit model techniques such as direct surface generation. Geometric continuity conditions. Surface evaluation techniques, diahedrel angle, draft analysis, reflection analysis, curvature analysis. CE conformance: Ethical behaviour of a professional engineer in a design environment.
Product liability, design registration, CE marking.
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| Assessment Breakdown | % |
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| Course Work | 50% | | End of Semester Formal Examination | 50% |
| | Outcome addressed | % of total | Assessment Date |
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| Formal End-of-Semester Examination | 1,2,3,4,5,6,7,8 | 50% | Semester End |
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| Coursework Breakdown |
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| Type | Description | Outcome addressed | % of total | Assessment Date |
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| Continuous Assessment | Reviewing integrated systems, hydraulic/electrical. Applying motors/actuators to mechanisms and integrating with hydraulic components. Evaluating overall system efficiency. | 1,2,3,4,5,6,8 | 12 | Week 3 | | Continuous Assessment | The application of vibration analysis. Calculation of spring, dampers, shock absorber requirements. | 1,2,3,4,5,6,8 | 13 | Week 8 | | Continuous Assessment | Plane kinematic analysis of rigid bodies – linkages, acceleration, velocity and displacement diagrams. Two/three dimensional kinematics, CAD Development of a linkage mechanism e.g. four bar linkage, crank slider linkage. | 1,2,3,4,5,6 | 12 | Week 4 | | Continuous Assessment | Integrating mechanical design with industrial design techniques. Developing freeform component designs to package predetermined electronic/mechanical components. Investigating implicit and explicit surface generation and surface evaluation techniques. | 1,2,3,7,8 | 13 | Week 12 |
IT Tallaght reserves the right to alter the nature and timings of assessment Module Workload & Resources| Workload | Full-time |
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| Type | Description | Hours | Frequency | Average Weekly Learner Workload |
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| Lecturer Supervised Learning | Lectures relating to design topics and tasks for the student to solve. | 4 | Every Week | 4.00 | | Total Weekly Learner Workload | 4.00 | | Total Weekly Contact Hours | 4.00 |
| Workload | Part-time mode |
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| Type | Description | Hours | Frequency | Average Weekly Learner Workload |
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| Independent Learning | Review of design techniques developed during lectures. | 2 | Every Week | 2.00 | | Independent Learning | Reviewing online tutorial resources. | 2 | Every Week | 2.00 | | Part-Time Total Weekly Learner Workload | 4.00 | | Part-Time Total Weekly Contact Hours | 0.00 |
| Resources |
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| Recommended Book Resources |
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- Chris McMahon, Jimmie Browne 1993, CADCAM from principles to practice, Addison Wesley [ISBN: ISBN 0201565021]
- 2001, Design Secrets: Products, Industrial Design Society of America, Rockport
- Michael F. Ashby 2010, Materials Selection in Mechanical Design, Fourth Edition, 2nd ed Ed., Butterworth-Heinemann [ISBN: 1856176630]
- K. Budinski 2009, Engineering Materials, Pearson publishing [ISBN: 0136109500]
- Richard Budynas 2011, Shigley's Mechanical Engineering Design Updated, 5th ed Ed., McGraw-Hill Higher Education [ISBN: 0071328408]
- Peter Childs 2003, Mechanical design, 2nd ed Ed., Butterworth-Heinemann [ISBN: 0750657715]
- Nigel Cross 2008, Engineering design methods, 3rd ed Ed., Wiley-Blackwell [ISBN: 0470519266]
- Petroski, H 1997, Invention by Design – how engineers get from thought to thing, Harvard University Press
- Pugh, S 1990, Total Design –integrated methods for successful product engineering, Addison Wesley
- ones F. D., Ryffel H. H., Horton H. L., Oberg E 2006, Machinery’s Handbook, 27th ed Ed., Green, R.,Ed., Industrial Press, NewYork
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