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 - 2019
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.
Feedback, Recommendations and Responses
Every unit is reviewed for enhancement each year. At the most recent review, the following staff and student feedback items were identified and recommendations were made.
Feedback from Have Your Say
Some students lack knowledge of fundamental Engineering Drawing and modelling packages such as AutoCAD, Inventor and Solidworks, making it challenging to complete some assessment components.
Student who are not confident with AutoCAD or Solidworks should be prepared to complete additional independent study. More assistance will be provided in the form of targeted tutorials in this respect.
Feedback from Have Your Say
Vast unit content.
This issue was addressed to some extent this year by moving two topics to other units. It, however, became imperative to still discuss those topics to keep the transitioning students abreast of the related knowledge. This issue will be overcome in the next offering.
- 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 to solve problems
- Analyse and design a range of machine elements, explain 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.
Alignment of Assessment Tasks to Learning Outcomes
| Assessment Tasks | Learning Outcomes | |||||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | |
| 1 - Written Assessment - 20% | ||||||
| 2 - Project (applied) - 50% | ||||||
| 3 - Project (applied) - 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 - Project (applied) - 50% | ||||||||||
| 3 - Project (applied) - 30% | ||||||||||
Textbooks
Shigley's Mechanical Engineering Design
Edition: SI 10th (2014)
Authors: Richard G Budynas and Keith J Nisbett
McGraw Hill
ISBN: 9789813151000
Binding: Paperback
Additional Textbook Information
Paper copies are available from the CQUni Bookshop here: http://bookshop.cqu.edu.au (search on the Unit code)
IT Resources
- CQUniversity Student Email
- Internet
- Unit Website (Moodle)
All submissions for this unit must use the referencing styles below:
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
- Discussion on Assignments, Major and minor projects.
- Assignment 1 (Individual): Design Analysis Problems - 20% total weighting
- Assignment 2 (Group): Group Design Project - 50% total weighting
- Assignment 3 (Individual): Individual Design Project - 30% total weighting
- Form Groups
Assignment 2: Group Design Project - Finalize the selection of group design project and submit a 1 page proposal via the submission link on unit Moodle site. Refer to assignment documentation for further details.
Module/Topic
- Failure Modes and Prevention in Machine Elements
- Failure Theories and Design for Static Loading
Chapter
Lecture Notes
Chapter 5, Shigley
Events and Submissions/Topic
Solved example problems, Design case study
Module/Topic
- Design for Variable Loading
- Fatigue Life Methods - Stress-life & Strain-life Methods
- Linear Elastic Fracture Mechanics (LEFM) Method
Chapter
Lecture Notes
Chapters 6, Shigley
Events and Submissions/Topic
Solved example problems
Module/Topic
- Design of Shafts – materials, shaft layout, shaft design for stress deflection considerations, critical speeds, limits and fits
- Design of shaft components - keys and keyways
Chapter
Lecture Notes
Chapter 7, Shigley
Events and Submissions/Topic
Solved example problems, Design case study
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
Chapter 11, Shigley
Events and Submissions/Topic
Solved example problems, Design case study
Module/Topic
Chapter
Events and Submissions/Topic
Module/Topic
- 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
Chapter 13, Shigley
Events and Submissions/Topic
Solved example problems, Design case study
Problem Solving Due: Week 6 Friday (30 Aug 2019) 11:45 pm AEST
Module/Topic
- 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
Chapter
Lecture Notes
Chapter 14, Shigley
Events and Submissions/Topic
Solved example problems, Design case study
Module/Topic
- Design of Bevel Gears
- Design of Worm Gears
Chapter
Lecture Notes
Chapter 15, Shigley
Events and Submissions/Topic
Solved example problems, Design case study
Module/Topic
- Design of Machine frames & Housings
- Design of Non-permanent Joints - Threads, Screws and Fasteners
Chapter
Lecture Notes
Chapter 8, Shigley
Events and Submissions/Topic
Solved example problems, Design case study
Module/Topic
- Design of Permanent Joints - Static Design of Welds
- Adhesive Bonding
Chapter
Lecture Notes
Chapter 9, Shigley
Events and Submissions/Topic
Solved example problems
Group Project Due: Week 10 Friday (27 Sept 2019) 11:45 pm AEST
Module/Topic
- Design of Mechanical Springs
Chapter
Lecture Notes
Chapter 10, Sigley
Events and Submissions/Topic
Solved example problems, Design case study
Module/Topic
- Tribology, Wear & Lubrication of Machine Elements
- Design & Selection of Journal Bearings
Chapter
Lecture Notes
Chapter 12, Shigley
Events and Submissions/Topic
Solved example problems, Design case study
Individual Project Due: Week 12 Friday (11 Oct 2019) 11:45 pm AEST
Module/Topic
Chapter
Events and Submissions/Topic
Module/Topic
Chapter
Events and Submissions/Topic
1 Written Assessment
This assignment will consist of 5 numerical problems which you will solve and submit during the term. Each problem will be related to a portion of the syllabus covered in the first 6 weeks.
Week 6 Friday (30 Aug 2019) 11:45 pm AEST
Week 8 Monday (9 Sept 2019)
The main criteria for assessment are:
1. Development of accurate free body diagrams (FBDs) for the problems
2. Application of relevant theory and design equations to calculate required unknowns
3. Comment on the final results obtained
Refer to the assessment handout for more detailed information.
- Apply the formal procedures of detailed machine design, including requirements, solutions, modelling and evaluation to solve problems
- Analyse and design a range of machine elements, explain the physical basis of their design, usage and operational limitations
- Problem Solving
- Critical Thinking
2 Project (applied)
The assessment will involve the design, drawing, CAD modelling and 3D printing of a gearbox for a particular application that you will solve undertake as a part of a 4-member team. You will assess your designs for 3D printability and rescale your original drawings for 3D printing. You will follow the instructions provided on the unit Moodle site and submit a comprehensive report and engineering drawings. There will be one report per group.
Week 10 Friday (27 Sept 2019) 11:45 pm AEST
Week 12 Monday (7 Oct 2019)
The following are the main assessment criteria for the gearbox assignment:
1. Succinct development of the design project case
2. Present and discuss appropriate assumptions, justifications and reflections on the scope and limitations of the design
3. Detailed design calculations for all components
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.
Refer to 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 to solve problems
- 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.
- Communication
- Problem Solving
- Critical Thinking
- Information Literacy
- Team Work
- Information Technology Competence
- Cross Cultural Competence
- Ethical practice
3 Project (applied)
In this assignment, you will design an individual machine element as described in the handout.
Week 12 Friday (11 Oct 2019) 11:45 pm AEST
Exam Week Monday (21 Oct 2019)
The main assessment criteria will include:
1. Adoption of prescribed design approaches to develop correct FBDs
2. Retrieve correct material data and other design coefficients from tables and charts
3. Apply correct theory and equations to solve for the unknowns
4. Make correct interpretations and comment on the final answers.
5. Develop full scale engineering drawing of the result according to AS1100.101 and 201
Refer to the assessment handout for more detailed information.
- Develop detailed design of machine components to Australian and International Standards
- Analyse and design a range of machine elements, explain the physical basis of their design, usage and operational limitations
- Interpet various design codes and standards
- Communicate as professionals through the production of drawings (computer aided) and Bill of Materials, and through written technical reports.
- Problem Solving
- Critical Thinking
- Information Literacy
- Information Technology Competence
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?
