Units
Stress Analysis
Unit code: ENB311
Contact hours: 5 per week
Credit points: 12
Information about fees and unit costs
Advanced analysis of stress and strain; experimental stress analysis techniques; failure criteria and factors of safety, axisymmetric systems; energy methods; plates and shell theory, principles of finite element analysis, and torsion of non-circular sections.
Availability
| Semester | Available |
|---|---|
| 2013 Semester 1 | Yes |
Sample subject outline - Semester 1 2013
Note: Subject outlines often change before the semester begins. Below is a sample outline.
Rationale
As a mechanical engineer, you must have the expertise to analyse components and systems to produce safe effective designs, innovate new products and improve existing devices. To be competent in doing this, you must understand how engineering components respond to loads and the nature of the stresses and strains that are set up in them as a result of loading. Stress analysis is an essential analytical process that is used to ensure that structures are safe for the intended service condition. In its traditional form it combines basic mathematical manipulations and theory of elasticity with engineering design decisions, while in the modern era computational analysis add to your capacity to analyse and design and optimize more complex product. If appropriately done, stress analysis results in light, reliable and robust structures with significant implication for cost saving and durability. This unit is located in third year and builds on your first and second year's work in materials and statics in ENB110 and Strength of Materials in ENB212.
Aims
The aim of this unit is to extend students' existing knowledge on basic mechanics of materials to more advanced stress analysis protocols involving the theory of elasticity and the principles and applications of finite element analysis (FEM/FEA).
Objectives
At the end of this unit, you should be able to:
1. apply the fundamental principles of the theory of elasticity to formulate and calculate stresses in practical engineering components and systems.
2. have an appreciation of the basic principles on which all finite element analysis packages are built and be able to setup finite element models of engineering structures for stress analysis and optimisation.
Content
1. 3D stress and strain analysis.
2. Plates and shells
3. Experimental stress analysis.
4. Fracture and failure criteria.
5. Finite element analysis - principles and application.
6. Axisymmetric problems
7. Torsion of non-circular sections.
8. Energy methods
Approaches to Teaching and Learning
No. of hours per week: 5 hours
Lectures: 2 hours
Tutorials: 1 hour
Computer Labs: 2 hours
The teaching in this unit is based around a series of lectures, tutorials and computer laboratory sessions which allow you to develop an understanding of the theoretical concepts (lectures) and then apply these concepts in the solution to set problems in and out of lecture rooms and tutorial sessions. You would be set formative and tutorial problems that cover both the theoretical and computational modelling aspects of the unit, and the individual assignments would be based on these formative and tutorial questions with variants of the problems where appropriate and contributory to your learning and understanding of the subject.
Assessment
Assessment will be in the form of in-class individual assignments, finite element modelling exercise and a written final examination.
Assessment name:
Problem Solving Task
Description:
There will be 4 of these 45-minute long in-class assignments. Questions would be drawn from formative and tutorial sheets.
Relates to objectives:
1
Weight:
30%
Internal or external:
Internal
Group or individual:
Individual
Due date:
Weeks 4,6,8,11
Assessment name:
FEA Project (applied)
Description:
Use of the ANSYS software package to construct a model and conduct the stress and strain analysis of an innovative idea on a common object.
Relates to objectives:
2
Weight:
20%
Internal or external:
Internal
Group or individual:
Individual
Due date:
Week 11
Assessment name:
Final Examination (written)
Description:
A written examination on stress analysis problems using the theories and techniques covered in the unit. Students would be allowed to bring into the examination room a single A4 formulae and methods sheet and no formula sheet will be provided in the examination.
Relates to objectives:
1
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
Resource material in the form of lecture notes and PowerPoint presentations are provided on the QUT Blackboard web site. This material is designed to supplement rather than replace the material presented during the lecture and tutorials.
Risk assessment statement
You will be informed of any requirements pertaining to a safe workplace. In lectures, tutorials and such, the information will include location of fire exits and meeting points in case of fire. If you do not follow legitimate instructions or endanger the safety of others or do not act in accordance with the requirements of the Workplace Health and Safety Act, you will be required to leave the session.
You will be required to undertake practical sessions in the laboratory under the supervision of the lecturer and technical staff of the School. In any laboratory practicals you will be advised of requirements of safe and responsible behaviour and will be required to wear appropriate protective items (e.g. closed shoes or steel capped shoes).
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: 23-Oct-2012
