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, synthesise 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 - 2024
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 UC Reflection
Students' low level of engineering drawing and CAD skills
UC should provide more background information and practice tutorials on engineering drawing and CAD.
Feedback from SUTE
Introduce more case studies in the weekly discussions
UC should explore the possibility of including more case studies in the weekly lectures.
- 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.
The Learning Outcomes for this unit are linked with the Engineers Australia Stage 1 Competency Standards for Professional Engineers in the areas of 1. Knowledge and Skill Base, 2. Engineering Application Ability and 3. Professional and Personal Attributes at the following levels:
Intermediate
Advanced
Refer to the Engineering Undergraduate Course Moodle site for further information on the Engineers Australia's Stage 1 Competency Standard for Professional Engineers and course level mapping information
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: 11th edn (2021)
Authors: Richard G Budynas and Keith J Nisbett
McGraw Hill
Singapore
ISBN: 9789813158986
Binding: Paperback
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
Design case study, Problem solving
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
Design case study, Problem solving
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
Design case study, Problem solving
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
Design case study, Problem solving
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
Design case study, Problem solving
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
Design case study, Problem solving
Problem Solving Due: Week 7 Friday (30 Aug 2024) 11:59 pm AEST
Module/Topic
- Design of Bevel Gears
- Design of Worm Gears
Chapter
Lecture Notes
Chapter 15, Shigley
Events and Submissions/Topic
Design case study, Problem solving
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
Design case study, Problem solving
Module/Topic
- Design of Permanent Joints - Static Design of Welds
- Adhesive Bonding
Chapter
Lecture Notes
Chapter 9, Shigley
Events and Submissions/Topic
Design case study, Problem solving
Group Project Due: Week 10 Friday (20 Sept 2024) 11:59 pm AEST
Module/Topic
Design of Mechanical Springs
Design and Selection of Mechanical Seals
Chapter
Lecture Notes
Chapter 10, Shigley
Events and Submissions/Topic
Design case study, Problem solving
Module/Topic
- Tribology, Wear & Lubrication of Machine Elements
- Design & Selection of Journal Bearings
Chapter
Lecture Notes
Chapter 12, Shigley
Events and Submissions/Topic
Design case study, Problem solving
Module/Topic
Chapter
Events and Submissions/Topic
Module/Topic
Chapter
Events and Submissions/Topic
1 Written Assessment
This assignment will consist of two Parts (A and B). Part A will constitute of 10 short answer questions related to the theory presented in the first 6 weeks of the term. All questions shall carry equal marks. Part B will constitute of 4 numerical problems from related content of the first 6 weeks. You must secure at least 50% of the weighted marks for this assessment to pass.
Week 7 Friday (30 Aug 2024) 11:59 pm AEST
Week 9 Friday (13 Sept 2024)
The main criteria for assessment are:
Part A:
You will provide succinct answers to the theory questions along with relevant examples, equations and references (where applicable).
Part B:
1. Solution formulation - development of accurate free body diagrams (FBDs)
2. Application of relevant theory and design equations to calculate required unknowns
3. Neat sketching of any shear force and bending moment diagrams as per recommended practice
4. 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)
This assessment will involve the design, drawing and CAD modelling printing of a machine assembly for a particular application that you will undertake as a part of a 4-member team. You will begin by forming a team, brainstorming and selecting an engineering application and develop a detailed design of problem by applying the relevant theories and concepts learned during the term. Further detailed instructions are available on the unit Moodle site.
Week 10 Friday (20 Sept 2024) 11:59 pm AEST
Week 12 Friday (4 Oct 2024)
The following are the main assessment criteria:
1. Succinct selection and development of the machine assembly including scope, appropriate assumptions, justifications and design limitations
2. Detailed design calculations for all components using established design codes, standards and procedures
3. Detailed and accurately scaled engineering drawing with BOMs, and relevant specifications for manufacture
4. Comprehensive documentation of the whole design process along with a list of references
Refer to the unit Moodle site for more detailed assessment criteria.
- 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 or a small assembly and produce an engineering drawing of your final design, as described in the handout. You must secure at least 50% of the weighted marks for this assessment to pass.
Review/Exam Week Friday (11 Oct 2024) 11:59 pm AEST
Exam Week Friday (18 Oct 2024)
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?
