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AERO3360: Aerospace Structures 1 (2019 - Semester 1)

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Unit: AERO3360: Aerospace Structures 1 (6 CP)
Mode: Normal-Day
On Offer: Yes
Level: Senior
Faculty/School: School of Aerospace, Mechanical & Mechatronic Engineering
Unit Coordinator/s: Professor Tong, Liyong
Session options: Semester 1
Versions for this Unit:
Site(s) for this Unit: http://web.aeromech.usyd.edu.au/AERO3360
Campus: Camperdown/Darlington
Pre-Requisites: AMME2301.
Brief Handbook Description: This unit aims to develop a student's understanding of the theoretical basis of advanced aerospace structural analysis; and introduce students to the solution of real-world aircraft structural problems. This unit of study will develop the following attributes: An understanding of the derivation of the fundamental equations of elasticity and their application in certain analytical problems; An understanding of plate theory and the ability to use this to obtain analytical solutions for plate bending and buckling problems; An understanding of energy-method to develop a deeper appreciation for the complexities of designing solution techniques for structural problems; An understanding of the basic principals behind stressed-skin aircraft construction and the practical analysis of typical aircraft components, including the limitations of such techniques.

At the end of this unit students will have an understanding of: 2-D and 3-D elasticity- general equations and solution techniques; Energy methods in structural analysis, including the principles of virtual work and total potential and complimentary energies; Fundamental theory of plates, including in-plane and bending loads as well as buckling and shear instabilities; Solution techniques for plate problems, including Navier solutions for rectangular plates; Combined bending and in-plane loading problems; Energy methods for plate-bending; and Plate buckling for compression and shear loadings; Bending of beams with unsymmetrical cross-sections; Basic principles and theory of stressed-skin structural analysis; Determination of direct stresses and shear flows in arbitrary thin-walled beams under arbitrary loading conditions including: Unsymmetrical sections, Open and closed sections, Single and multi-cell closed sections, Tapered sections, Continuous and idealized sections; The analysis of common aircraft components including fuselages, wings, skin-panels, stringers, ribs, frames and cut-outs; The effects of end constraints and shear-lag on the solutions developed as well as an overall appreciation of the limitations of the solution methods presented.
Assumed Knowledge: None.
Lecturer/s: Professor Tong, Liyong
Timetable: AERO3360 Timetable
Time Commitment:
# Activity Name Hours per Week Sessions per Week Weeks per Semester
1 Lecture 3.00 2 13
2 Tutorial 2.00 1 13
3 Independent Study 6.00 13
T&L Activities: Tutorial: During the first hour of each tutorial session, fully worked examples will be presented in detail.

Attributes listed here represent the key course goals (see Course Map tab) designated for this unit. The list below describes how these attributes are developed through practice in the unit. See Learning Outcomes and Assessment tabs for details of how these attributes are assessed.

Attribute Development Method Attribute Developed
Have a body of knowledge in elasticity, theory of plate bending and buckling, and analysis methods of representative aicraft structures. Be able to apply the basic theories and methods to practices in familiar and unfamiliar cases in structural analyses. (2) Engineering/ IT Specialisation (Level 3)
Be able to (a) collect, correlate, display, analyse and report observations related to analysis of aerospace structures; (b) apply theoretical skills appropriate to aerospace structures via hand calculation to solve representative practical problems, including results analysis as well as documentation.
Be able to identify, access, organize and communicate knowledge pertinent to stress analysis of aerospace structures in written and oral English, and to engage in class discussion.
(6) Communication and Inquiry/ Research (Level 2)
Acknowledge their personal responsibility for their own value judgment and their ethical behaviour towards others in assignments. (8) Professional Effectiveness and Ethical Conduct (Level 3)

For explanation of attributes and levels see Engineering & IT Graduate Outcomes Table 2018.

Learning outcomes are the key abilities and knowledge that will be assessed in this unit. They are listed according to the course goal supported by each. See Assessment Tab for details how each outcome is assessed.

(7) Project and Team Skills (Level 2)
1. An understanding of testing method in applying knowledge to an aircraft wing structure
(2) Engineering/ IT Specialisation (Level 3)
2. An understanding of the derivation of the fundamental equations of elasticity and their application in certain analytical problems.
3. An understanding of plate theory and the ability to use this to obtain analytical solutions for plate bending and buckling problems.
(3) Problem Solving and Inventiveness (Level 3)
4. An understanding of energy-method solution techniques for structural problems.
5. An understanding of the basic principals behind stressed-skin aircraft construction and the practical analysis of typical aircraft components, including the limitations of such techniques.
Assessment Methods:
# Name Group Weight Due Week Outcomes
1 Assignment 1 No 5.00 Week 3 5,
2 Assignment 2 No 5.00 Week 6 5,
3 Assignment 3 No 5.00 Week 9 2, 5,
4 Assignment 4 No 5.00 Week 11 2, 3, 4, 5,
5 Assignment 5 No 5.00 Week 13 2, 3, 4, 5,
6 Quiz 1 No 10.00 Week 5 2, 3, 4, 5,
7 Quiz 2 No 10.00 Week 10 2, 3, 4, 5,
8 Lab Yes 5.00 Week 10 1,
9 Exam No 50.00 Exam Period 2, 3, 4, 5,
Assessment Description: Assignment: A penalty of 5% per day will be applied for late submission.

Quiz: Each quiz will be closed-book and held during lecture hour.

Lab: A test of an aircraft wing structure.

Exam: This will be a closed-book exam. A student must get 40% in the final exam to pass the unit, regardless of the sum of his/her individual marks.

There may be statistically defensible moderation when combining the marks from each component to ensure consistency of marking between markers, and alignment of final grades with unit outcomes.
Grading:
Grade Type Description
Standards Based Assessment Final grades in this unit are awarded at levels of HD for High Distinction, DI (previously D) for Distinction, CR for Credit, PS (previously P) for Pass and FA (previously F) for Fail as defined by University of Sydney Assessment Policy. Details of the Assessment Policy are available on the Policies website at http://sydney.edu.au/policies . Standards for grades in individual assessment tasks and the summative method for obtaining a final mark in the unit will be set out in a marking guide supplied by the unit coordinator.
Policies & Procedures: See the policies page of the faculty website at http://sydney.edu.au/engineering/student-policies/ for information regarding university policies and local provisions and procedures within the Faculty of Engineering and Information Technologies.
Prescribed Text/s: Note: Students are expected to have a personal copy of all books listed.
  • Aircraft Structures for Engineering Students
Recommended Reference/s: Note: References are provided for guidance purposes only. Students are advised to consult these books in the university library. Purchase is not required.
  • Engineering Mechanics of Composite Materials
  • Theory of Elasticity
  • Theory of Elastic Stability
  • Theory of Plates and Shells
Online Course Content: http://web.aeromech.usyd.edu.au/AERO3360

Note that the "Weeks" referred to in this Schedule are those of the official university semester calendar https://web.timetable.usyd.edu.au/calendar.jsp

Week Description
Week 1 Loads on Aircraft, function of structural components.
Bending of beams with non-symmetrical cross sections.
Week 2 Stress, strain and displacement relationships for open and closed single cell thin walled beams.
Bending of beams with non-symmetrical cross sections.
Week 3 Torsion of thin walled beam sections.
Stress, strain and displacement relationships for open and closed single cell thin walled beams.
Structural idealization.
Assessment Due: Assignment 1
Assessment Due: Assignment 1
Week 4 Multicell beams.
Structural idealization.
Week 5 Multicell beams.
Tapered beams.
Assessment Due: Quiz 1
Week 6 Tapered beams.
Shear panels, ribs and cut-outs.
Assessment Due: Assignment 2
Assessment Due: Assignment 2
Week 7 Structural constraints.
Shear panels, ribs and cut-outs.
Week 8 Elasticity.
Week 9 Assessment Due: Assignment 3
2D problems.
Assessment Due: Assignment 3
Week 10 2D problems in polar coordinates.
Assessment Due: Quiz 2
Assessment Due: Lab
Week 11 Bending of thin plates.
Assessment Due: Assignment 4
Assessment Due: Assignment 4
Week 12 Plates with combined bending and in-plane loadings.
Week 13 Review.
Assessment Due: Assignment 5
Energy methods for plate bending, and composite structures.
Assessment Due: Assignment 5
Exam Period Assessment Due: Exam

Course Relations

The following is a list of courses which have added this Unit to their structure.

Course Year(s) Offered
Aeronautical / Science (Medical Science Stream) 2018, 2019, 2020
Aeronautical (till 2014) 2010, 2011, 2012, 2013, 2014
Aeronautical Engineering / Arts 2011, 2012, 2013, 2014
Aeronautical Engineering / Commerce 2010, 2011, 2012, 2013, 2014
Aeronautical Engineering / Medical Science 2011, 2012, 2013, 2014
Aeronautical Engineering / Project Management 2012, 2013, 2014
Aeronautical Engineering / Science 2011, 2012, 2013, 2014
Aeronautical Engineering / Law 2010, 2011, 2012, 2013, 2014
Aeronautical Engineering (Space) / Commerce 2010, 2011, 2012, 2013, 2014
Aeronautical (Space) (till 2014) 2010, 2011, 2012, 2013, 2014
Aeronautical Engineering (Space) / Arts 2011, 2012, 2013, 2014
Aeronautical Engineering (Space) / Medical Science 2011, 2012, 2013, 2014
Aeronautical Engineering (Space) / Project Management 2012, 2013, 2014
Aeronautical Engineering (Space) / Science 2011, 2012, 2013, 2014
Aeronautical Engineering (Space) / Law 2010, 2011, 2012, 2013, 2014
Aeronautical Mid-Year 2016, 2017, 2018, 2019, 2020
Aeronautical/ Project Management 2019, 2020
Aeronautical 2015, 2016, 2017, 2018, 2019, 2020
Aeronautical / Arts 2015, 2016, 2017, 2018, 2019, 2020
Aeronautical / Commerce 2015, 2016, 2017, 2018, 2019, 2020
Aeronautical / Medical Science 2015, 2016, 2017
Aeronautical / Music Studies 2016, 2017
Aeronautical / Project Management 2015, 2016, 2017, 2018
Aeronautical / Science 2015, 2016, 2017, 2018, 2019, 2020
Aeronautical/Science (Health) 2018, 2019, 2020
Aeronautical / Law 2015, 2016, 2017, 2018, 2019, 2020
Aeronautical (Space) 2015
Aeronautical (Space) / Arts 2015
Aeronautical (Space) / Commerce 2015
Aeronautical (Space) / Medical Science 2015
Aeronautical (Space) / Project Management 2015
Aeronautical (Space) / Science 2015
Aeronautical (Space) / Law 2015

Course Goals

This unit contributes to the achievement of the following course goals:

Attribute Practiced Assessed
(6) Communication and Inquiry/ Research (Level 2) Yes 0%
(7) Project and Team Skills (Level 2) No 5%
(8) Professional Effectiveness and Ethical Conduct (Level 3) Yes 0%
(5) Interdisciplinary, Inclusiveness, Influence (Level 3) No 0%
(4) Design (Level 3) No 0%
(2) Engineering/ IT Specialisation (Level 3) Yes 43%
(3) Problem Solving and Inventiveness (Level 3) No 52%
(1) Maths/ Science Methods and Tools (Level 3) No 0%

These goals are selected from Engineering & IT Graduate Outcomes Table 2018 which defines overall goals for courses where this unit is primarily offered. See Engineering & IT Graduate Outcomes Table 2018 for details of the attributes and levels to be developed in the course as a whole. Percentage figures alongside each course goal provide a rough indication of their relative weighting in assessment for this unit. Note that not all goals are necessarily part of assessment. Some may be more about practice activity. See Learning outcomes for details of what is assessed in relation to each goal and Assessment for details of how the outcome is assessed. See Attributes for details of practice provided for each goal.