Overview
Design of Machine Elements is aimed at integrating and applying prior knowledge in fundamental design, materials sciences, mechanics of materials, statics and dynamics coupled with design strategies and knowledge of machine elements to design various machine components. These skills and knowledge will help you to design, analyse, synthesize and deliver robust engineering solutions. You will acquire strong analytical knowledge of machine elements, their design and load carriage and power transmission mechanics.
Details
Pre-requisites or Co-requisites
Prerequisites: MATH11219 Engineering Mathematics AND (ENEM12009 Structural Mechanics OR ENEM14012 Solid Mechanics and Computational Analysis)
Important note: Students enrolled in a subsequent unit who failed their pre-requisite unit, should drop the subsequent unit before the census date or within 10 working days of Fail grade notification. Students who do not drop the unit in this timeframe cannot later drop the unit without academic and financial liability. See details in the Assessment Policy and Procedure (Higher Education Coursework).
Offerings For Term 2 - 2017
Attendance Requirements
All on-campus students are expected to attend scheduled classes – in some units, these classes are identified as a mandatory (pass/fail) component and attendance is compulsory. International students, on a student visa, must maintain a full time study load and meet both attendance and academic progress requirements in each study period (satisfactory attendance for International students is defined as maintaining at least an 80% attendance record).
Recommended Student Time Commitment
Each 6-credit Undergraduate unit at CQUniversity requires an overall time commitment of an average of 12.5 hours of study per week, making a total of 150 hours for the unit.
Class Timetable
Assessment Overview
Assessment Grading
This is a graded unit: your overall grade will be calculated from the marks or grades for each assessment task, based on the relative weightings shown in the table above. You must obtain an overall mark for the unit of at least 50%, or an overall grade of ‘pass’ in order to pass the unit. If any ‘pass/fail’ tasks are shown in the table above they must also be completed successfully (‘pass’ grade). You must also meet any minimum mark requirements specified for a particular assessment task, as detailed in the ‘assessment task’ section (note that in some instances, the minimum mark for a task may be greater than 50%). Consult the University’s Grades and Results Policy for more details of interim results and final grades.
All University policies are available on the CQUniversity Policy site.
You may wish to view these policies:
- Grades and Results Policy
- Assessment Policy and Procedure (Higher Education Coursework)
- Review of Grade Procedure
- Student Academic Integrity Policy and Procedure
- Monitoring Academic Progress (MAP) Policy and Procedure – Domestic Students
- Monitoring Academic Progress (MAP) Policy and Procedure – International Students
- Student Refund and Credit Balance Policy and Procedure
- Student Feedback – Compliments and Complaints Policy and Procedure
- Information and Communications Technology Acceptable Use Policy and Procedure
This list is not an exhaustive list of all University policies. The full list of University policies are available on the CQUniversity Policy site.
- Develop detailed design of machine components to Australian and International Standards
- Apply the formal procedures of detailed machine design, including requirements, solutions, modelling and evaluation
- Analyse and design a range of machine elements, the physical basis of their design, usage and operational limitations
- Interpet various design codes and standards
- Work effectively in teams by: identifying individual roles and responsibility, interacting positively with colleagues, and communicating effectively at group meetings
- Communicate as professionals through the production of drawings (computer aided) and Bill of Materials, and through written technical reports
Learning outcomes are linked to Engineers Australia Stage 1 Competencies and also discipline capabilities. You can find the mapping for this on the Engineering Undergraduate Course website.
Alignment of Assessment Tasks to Learning Outcomes
| Assessment Tasks | Learning Outcomes | |||||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | |
| 1 - Written Assessment - 20% | ||||||
| 2 - Group Work - 50% | ||||||
| 3 - Practical Assessment - 30% | ||||||
Alignment of Graduate Attributes to Learning Outcomes
| Graduate Attributes | Learning Outcomes | |||||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | |
| 1 - Communication | ||||||
| 2 - Problem Solving | ||||||
| 3 - Critical Thinking | ||||||
| 4 - Information Literacy | ||||||
| 5 - Team Work | ||||||
| 6 - Information Technology Competence | ||||||
| 7 - Cross Cultural Competence | ||||||
| 8 - Ethical practice | ||||||
| 9 - Social Innovation | ||||||
| 10 - Aboriginal and Torres Strait Islander Cultures | ||||||
Alignment of Assessment Tasks to Graduate Attributes
| Assessment Tasks | Graduate Attributes | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
| 1 - Written Assessment - 20% | ||||||||||
| 2 - Group Work - 50% | ||||||||||
| 3 - Practical Assessment - 30% | ||||||||||
Textbooks
Shigley's Mechanical Engineering Design
Edition: 10th (2015)
Authors: Budynas, R.G., and Nisbett, J.K.
McGraw Hill
New York New York , New York , USA
ISBN: 978-981-4595-28-5
Binding: Hardcover
IT Resources
- CQUniversity Student Email
- Internet
- Unit Website (Moodle)
All submissions for this unit must use the referencing style: Harvard (author-date)
For further information, see the Assessment Tasks.
p.gudimetla@cqu.edu.au
Module/Topic
Introduction to design of machine elements
Design Standards and Design Codes
Design for Strength & Stiffness - Review of static design methods
Chapter
Lecture Notes
Chapters 1 - 4, Shigley
Events and Submissions/Topic
Example problems
Discussion on Assignments, Major and minor projects.
Assignment 1: Problem solving (3 Sets)
Assignment 2: Gearbox Project
Assignment 3: Gearbox Housing Project
Module/Topic
Failure of Machine Elements and Prevention
Design for variable loading - Fatigue loading
Failure Theories
Chapter
Lecture Notes
Chapters 5,6 ShigleyEvents and Submissions/Topic
Solved example problems, Design case study
N.B. Assignment 1 will consist of 3 problem sets that you will solve and submit. Check submission dates for each problem set.
Assignment 2: Gearbox Design Project - Selection of application for the design of a multi-stage gearbox. One page write up on your proposed application. Refer to unit Moodle site for more details.
Module/Topic
Part 1: Design of Shafts – materials, shaft layout, shaft design for stress deflection considerations, critical speeds, limits and fits
Part 2: Design of shaft components - keys and keyways
Chapter
Lecture Notes
Chapters 7 ShigleyEvents and Submissions/Topic
Solved example problems, Design case study
Gearbox design activity - Finalization of functional design parameters for gearbox, power requirements, operational conditions, sizing, concept generation, shaft layout consideration and related design calculations
Documentation of design activity
Submission (S1): Brief Proposal of your gearbox project
Module/Topic
Design & Selection of Roller Bearings - Variable loading, Selection of ball, cylinder and tapered roller bearings, design assessment, lubrication, mounting and enclosure design
Chapter
Lecture Notes
Chapters 11 ShigleyEvents and Submissions/Topic
Solved example problems, Design case study
Gearbox design activity - concept generation, bearing selection for shafts and related design calculations
Documentation of design activity continues
Submission (S2): Assignment 1, Problem Set 1
Module/Topic
Design & Selection of Journal Bearings
Chapter
Lecture Notes
Chapters 12 ShigleyEvents and Submissions/Topic
Solved example problems, Design case study
Gearbox design activity - recheck all calculations and confirm bearing selection, development of drawings
Documentation of design activity continues
Module/Topic
Chapter
Events and Submissions/Topic
Module/Topic
Part 1: Gears – types of gears, Spur gear terminology, Lewis Bending equation, AGMA Stress equations, AGMA Strength equations, dynamic, overload, size, surface condition factors
Chapter
Lecture Notes
Chapters 13 ShigleyEvents and Submissions/Topic
Solved example problems, Design case study
Gearbox design activity - concept generation, gear selection and related design calculation, drawing activity continues
Documentation of design activity continues
Module/Topic
Part 1: Design of Spur & Helical Gears – Load distribution, hardness ratio, stress cycle life, temperature, reliability factors, design of gear trains - calculation of reduction ratios, power transmission
Part 2: Design of Bevel & Helical gears
Chapter
Lecture Notes
Chapters 14,15 ShigleyEvents and Submissions/Topic
Solved example problems, Design case study
Gearbox design activity - concept generation, gear selection and related design calculation, drawing activity continues
Documentation of design activity continues
Submission (S3): Assignment 1, Problem Set 2
Module/Topic
Design of Machine frames & Housings
Design of Flexible Machine Elements - belt and rope drives
Chapter
Lecture Notes
Chapter 17 Shigley
Events and Submissions/Topic
Solved example problems, Design case study
Gearbox Project - all design finalization, recheck calculations, transmission ratios, tramission stage design recheck etc., develop accurate drawings for CAD models.
Rescale models to suit 3D printability and finalize all drawings, CAD data.
Documentation of design activity continues
Module/Topic
Design of Flexible Machine Elements - chain drives
Design of Non-permanent Joints - threads
Chapter
Lecture Notes
Chapter 17 Shigley
Chapter 8 Shigley
Events and Submissions/Topic
Solved example problems, Design case study
Gearbox Housing design - establish IP rating for the housing, developing dimensioning, materials, fastening mechanisms.
Submission (S4): Assignment 2 Gearbox Project
CAD files to be submitted for 3D printing.
Project 1 Due: Week 9 Friday (15 Sept 2017) 11:45 pm AEST
Module/Topic
Design of Non-permanent Joints - Screws and fasteners
Chapter
Lecture Notes
Chapter 8 ShigleyEvents and Submissions/Topic
Solved example problems, Design case study
Gearbox Housing design activity continues - finalization of all design parameters. Commence drawings for development of CAD models.
Rescale models to suit 3D printability and finalize all drawings, CAD data.
Module/Topic
Design of Permanent Joints - welds (static design), adhesive bonding
Chapter
Lecture Notes
Chapter 9 ShigleyEvents and Submissions/Topic
Submission (S5): Assignment 3 Gearbox Housing Project
Project 2 Due: Week 11 Friday (29 Sept 2017) 11:45 pm AEST
Module/Topic
Design of Seals for static, dynamic and reciprocating applications
Design of Springs
Chapter
Lecture Notes
Chapter 10 Shigley
Events and Submissions/Topic
Submission (S6): Assignment 1, Problem Set 3
Written Assessment Due: Week 12 Friday (6 Oct 2017) 11:45 pm AEST
Module/Topic
Chapter
Events and Submissions/Topic
Module/Topic
Chapter
Events and Submissions/Topic
ENEM13015 Design of Machine Elements is a new unit that will be delivered for the first time to both internal and distance students enrolled in CC31 and CC32 as part of the new engineering program. Drawing upon the knowledge gained in ENEM12009 Strucural Mechanics and ENEG11008 Materials for Engineers, the unit will introduce students to the design of various machine elements and assemblies for variable loading taking into consideration fatigue and endurance. It will introduce various failure criteria for the basis of such approaches and also introduce relevant design codes and standards used. Students will involve themselves in solving typical design problems, partake design and drawing activities to produce 3D printable gearbox and a gearbox housing.
1 Written Assessment
This assignment will consist of 3 problem sets (4 or 5 design problems per set) which you will progressively submit during the term. Each problem set will be related to a portion of the syllabus covered in some weeks and will be an extension of the solved examples and tutorial problems you will encounter in the unit.
Week 12 Friday (6 Oct 2017) 11:45 pm AEST
Exam Week Friday (20 Oct 2017)
The main criteria for assessment are:
1. Development of accurate free body diagrams (FBDs) of the problem.
2. Application of relevant theory and design equations to calculate required unknowns
3. Comment on the final results obtained.
- Develop detailed design of machine components to Australian and International Standards
- Apply the formal procedures of detailed machine design, including requirements, solutions, modelling and evaluation
- Interpet various design codes and standards
- Communication
- Problem Solving
- Critical Thinking
- Information Literacy
- Information Technology Competence
- Ethical practice
2 Group Work
Project 1 will consist of the design and drawing of a gearbox for a particular application you will chose. This is a group assignment with a maximum of 4 team members. Please refer to the unit Moodle site for more information.
Week 9 Friday (15 Sept 2017) 11:45 pm AEST
Week 11 Friday (29 Sept 2017)
The following are the main assessment criteria for the gearbox assignment:
1. Succinct development of a case for the gearbox
2. Complete design of the various stages along with appropriate assumptions, justifications and reflections on the scope and limitations of the design.
3. Detailed design calculations for all components such as shafts, bearings, keys, keyways, gears (including number of stages)
4. Detailed, accurate and scaled engineering drawings with BOMs and all relevant specifications according to AS standards, for 3D printability
5. Comprehensive documentation of the design procedure with a list of references.
See the unit Moodle site for more detailed information.
- Develop detailed design of machine components to Australian and International Standards
- Apply the formal procedures of detailed machine design, including requirements, solutions, modelling and evaluation
- Analyse and design a range of machine elements, the physical basis of their design, usage and operational limitations
- Work effectively in teams by: identifying individual roles and responsibility, interacting positively with colleagues, and communicating effectively at group meetings
- Communicate as professionals through the production of drawings (computer aided) and Bill of Materials, and through written technical reports
- Communication
- Problem Solving
- Critical Thinking
- Information Literacy
- Team Work
- Information Technology Competence
- Cross Cultural Competence
- Ethical practice
3 Practical Assessment
Project 2 relates to the design and drawing of a housing for the gearbox designed in Assignment 2. This is a group assignment and will be executed by the same team members as in Assignment 1. Please see the unit Moodle site for detailed information on the task description.
Week 11 Friday (29 Sept 2017) 11:45 pm AEST
Exam Week Friday (20 Oct 2017)
The following are the main assessment criteria for the gearbox housing assignment:
1. Succinct development of a case for the gearbox housing with comment on the selected IP rating for the housing.
2. Complete design of the housing including top and bottom cover and fastening mechanisms
3. Detailed design calculations for all components top cover, bottom cover, bolts, screws and seals
4. Detailed, accurate and scaled engineering drawings with BOMs and all relevant specifications according to AS standards, for 3D printability
5. Comprehensive documentation of the design procedure with a list of references.
See the unit Moodle site for more detailed information.
- Develop detailed design of machine components to Australian and International Standards
- Apply the formal procedures of detailed machine design, including requirements, solutions, modelling and evaluation
- Analyse and design a range of machine elements, the physical basis of their design, usage and operational limitations
- Work effectively in teams by: identifying individual roles and responsibility, interacting positively with colleagues, and communicating effectively at group meetings
- Communicate as professionals through the production of drawings (computer aided) and Bill of Materials, and through written technical reports
- Communication
- Problem Solving
- Critical Thinking
- Information Literacy
- Team Work
- Information Technology Competence
- Cross Cultural Competence
- Ethical practice
As a CQUniversity student you are expected to act honestly in all aspects of your academic work.
Any assessable work undertaken or submitted for review or assessment must be your own work. Assessable work is any type of work you do to meet the assessment requirements in the unit, including draft work submitted for review and feedback and final work to be assessed.
When you use the ideas, words or data of others in your assessment, you must thoroughly and clearly acknowledge the source of this information by using the correct referencing style for your unit. Using others’ work without proper acknowledgement may be considered a form of intellectual dishonesty.
Participating honestly, respectfully, responsibly, and fairly in your university study ensures the CQUniversity qualification you earn will be valued as a true indication of your individual academic achievement and will continue to receive the respect and recognition it deserves.
As a student, you are responsible for reading and following CQUniversity’s policies, including the Student Academic Integrity Policy and Procedure. This policy sets out CQUniversity’s expectations of you to act with integrity, examples of academic integrity breaches to avoid, the processes used to address alleged breaches of academic integrity, and potential penalties.
What is a breach of academic integrity?
A breach of academic integrity includes but is not limited to plagiarism, self-plagiarism, collusion, cheating, contract cheating, and academic misconduct. The Student Academic Integrity Policy and Procedure defines what these terms mean and gives examples.
Why is academic integrity important?
A breach of academic integrity may result in one or more penalties, including suspension or even expulsion from the University. It can also have negative implications for student visas and future enrolment at CQUniversity or elsewhere. Students who engage in contract cheating also risk being blackmailed by contract cheating services.
Where can I get assistance?
For academic advice and guidance, the Academic Learning Centre (ALC) can support you in becoming confident in completing assessments with integrity and of high standard.
What can you do to act with integrity?
