Units

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Sample subject outline - Semester 1 2013

Note: Subject outlines often change before the semester begins. Below is a sample outline.

Rationale

After learning Fundamentals of Mechanical Design it is important to learn design rules and methods for typical mechanical elements, understand their relationship in machines, familiarize yourself with relevant design standards, as well as to learn advanced solid modelling software packages. This will enable you to carry out a complete design of typical machines and develop design documentation to include in engineering reports. This unit is located in third year to draw on prior technical and professional skills development and prepare you for further study of engineering design (such as design of machinery for special application, machinery failure analysis and machine condition monitoring) as well as for the final year professional project.

Aims

The aim of this unit is to enable you to carry out a complete design of machines such as gearboxes, including design calculations and selection of standard components, and to enable you to produce complete technical documentation using advanced solid modelling software packages for writing a professional project report.

Objectives

On completion of this unit you should be able to:

1. Carry out a complete design of a machine such as a gearbox including design calculations of typical mechanical components and selection of standard components.
2. Select lubricants for mechanical drives.
3. Produce complete design documentation such as a project report and complete engineering drawings using advanced solid modelling packages.
4. Reflect on environmental, sustainability and community issues and incorporate these in your design of machines.

Content

1. Fasteners.
2. Shafts and associated parts.
3. Gear train design calculations.
4. Drives with flexible elements.
5. Cam design.
6. Extension, compression and other types of springs.
7. Fundamentals of lubrication.
8. Frames and housings, machine components relationship.
9. Clutches, couplings and brakes.
10. Solid modelling with advanced solid modelling software packages.
11. Gearbox design project.

Approaches to Teaching and Learning

Hours per week: 6

Lecture: 2
Tutorial: 2
Solid modelling computer classes: 2

Formal lecture sessions will cover the theory and illustrate some practical applications of mechanical component design. Additional learning will be achieved by reading the course notes, reference material and working with standards. Individual and group tutorial exercises will give you practice in machine element design. Worked solutions will be made available progressively during tutorials and on the Blackboard-site. Some classes will be conducted in the Design Laboratory with real equipment. Assessment tasks will simulate real-life design problems and often will require communication with other students. These are designed to strengthen understanding of the basic concepts and techniques and to develop skills in definition and solution of real design problems. Class work will be supplemented with self-study using the Blackboard-site where different teaching and learning resources are available online.

An essential part of the unit is a Design project on Mechanical transmission, where you work in teams of two to develop a mechanical drive train for specific operating conditions. This is an ongoing project. The first part of the project is carried out in this unit when you design a mechanical transmission. Then, in unit ENB 317 Design and maintenance of machinery you complete the second part of this project and develop a lubricating system for that transmission.

During solid modelling classes you will study one of the leading solid modelling software packages (e.g. SolidWorks) and put it to a practical application developing a solid model of the gearbox you design on the gearbox project.

There will be also an industry visit to one of the industry leading companies (e.g. Terex Cranes) where you will have an opportunity to see fabrication of real machine elements and assembly of a machine such as a mobile crane.

Assessment

Assessment will be based on the following assessment tasks: problem solving tasks, gearbox design project and final examination. These assignments are designed to facilitate the development of different learning outcomes and include individual and team work, as well as self-study.You will receive ongoing feedback throughout the semester through peer, team and tutor discussions in and outside class. You will also have the opportunity to receive feedback through written comments to your written assignments and project report. Oral feedback will be given after marking of each assignment with analysis of typical errors.

Formative Assessment

You will get opportunity to practise and reflect on a range of marked assignments and project reports as well as on unmarked in-class exercises that will be checked by a tutor.

Assessment name: Problem Solving Task
Description: Design of joint with fasteners.
Using a computational procedure for threaded joints design you will assess operating loads, select the size of bolts, calculate tightening torque required and recommend locking method.
Relates to objectives: 1. Carry out a complete design of a machine element and selection of standard components.
4. Understand environmental, sustainability and community issues and reflect them in design of machines.
Weight: 15%
Internal or external: Internal
Group or individual: Individual
Due date: Week 7

Assessment name: Project (applied)
Description: Gearbox design project
1. In a group of two students you will be given initial data and different (individual for each group member) operating conditions. Using Genius software from Bonfiglioli Redutori and collaborating with your team member you will consider possible concepts of the gearbox for the given data. Then, individually you will justify a concept suitable for your operating conditions, carry out design calculations for gearbox components, select standard components and develop a solid model of the gearbox you designed.
2. Write an individual project report. Attach two lab reports (gearbox lab, and spring lab).
Relates to objectives: 1. Carry out a complete design of a machine such as a gearbox, design calculation of mechanical components and selection of standard components.
3. Produce complete design documentation such as project report and complete engineering drawings using advanced solid modelling packages.
4. Understand environmental, sustainability and community issues and reflect them in design of machines.
Weight: 35%
Internal or external: Internal
Group or individual: Group with Individual Component
Due date: Week 13

Assessment name: Examination (Theory)
Description: Examination is a mixture of problem solving and computational techniques learned in class and working on the project. You have to demonstrate understanding of how machine components work and why particular design decisions are made.
Relates to objectives: 1. Carry out a complete design of a machine such as a gearbox including design calculations of typical mechanical components and selection of standard components.
2. Select lubricants for mechanical drives.
4. Reflect on environmental, sustainability and community issues and incorporate these in your design of machines.
Weight: 50%
Internal or external: Internal
Group or individual: Individual
Due date: Examination period

Academic Honesty

QUT is committed to maintaining high academic standards to protect the value of its qualifications. To assist you in assuring the academic integrity of your assessment you are encouraged to make use of the support materials and services available to help you consider and check your assessment items. Important information about the university's approach to academic integrity of assessment is on your unit Blackboard site.

A breach of academic integrity is regarded as Student Misconduct and can lead to the imposition of penalties.

Resource materials

Type: Course notes
Author: Assoc. Prof. Vladis Kosse (Available from the Blackboard site for ENB316 unit).

Type: Tutorial handouts
Author: Assoc. Prof. Vladis Kosse (Available from the Blackboard site for ENB316 unit).

Type: Power Point slides on lubrication
Author: Dr. Dennis DePellegrin (Available from the Blackboard site for ENB316 unit).

Type: SolidWorks manual.
Author: Dr. Wijitha Senadeera (Available from the Blackboard site for ENB316 unit).

Australian Drawing and Design standards (Available online from QUT library).

Additional recommended literature

Juvinal, Robert C. and Marshek Kurt M. Fundamentals of Machine component design, Fourth edition, John Willey & Sons, Inc. 2006
Budinas, R. G. and Nisbett, J. K. Shigley's Mechanical Engineering Design, McGraw Hill, 2008
Mott, R.L. Machine Elements in Mechanical Design, Prentice Hall Inc. 1992.
Norton, R. L. Machine Design - an Integrated Approach, Third edition, Pearson Prentice Hall, 1996.
Urugal, A. C. Mechanical Design - an Integrated Approach, McGraw Hill, 2004.

Risk assessment statement

You will undertake lectures, tutorials and solid modelling classes in traditional classrooms and lecture theatres. As such, there are no extraordinary workplace health and safety issues associated with these components of the unit.

The lab sessions will be carried out in the Design Laboratory where enclosed foot ware is required (students provide themselves).

You will undergo a health and safety induction before the commencement of the academic year and will be issued with a safety induction card. If you do not have a safety induction card you will be denied access to laboratories.

During industry visit you have to obey the rules of the host company, first of all enclosed footwear and eye protection (goggles will be provided if necessary).

Disclaimer - Offer of some units is subject to viability, and information in these Unit Outlines is subject to change prior to commencement of semester.

Last modified: 22-Oct-2012