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MECH3361: Mechanics of Solids 2 (2019 - Semester 2)

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Unit: MECH3361: Mechanics of Solids 2 (6 CP)
Mode: Normal-Day
On Offer: Yes
Level: Senior
Faculty/School: School of Aerospace, Mechanical & Mechatronic Engineering
Unit Coordinator/s: Professor Li, Qing
Session options: Semester 2
Versions for this Unit:
Campus: Camperdown/Darlington
Pre-Requisites: AMME2301 AND (AMME1362 OR AMME2302 OR CIVL2110).
Brief Handbook Description: The unit of study aims to: teach the fundamentals of analysing stress and deformation in a solid under complex loading associated with the elemental structures/components in aerospace, mechanical and biomedical engineering; develop the following attributes: understand the fundamental principles of solid mechanics and basic methods for stress and deformation analysis of a solid structure/element in the above mentioned engineering areas; gain the ability to analyse problems in terms of strength and deformation in relation to the design, manufacturing and maintenance of machines, structures, devices and elements in the above mentioned engineering areas.

At the end of this unit students will have a good understanding of the following: applicability of the theories and why so; how and why to do stress analysis; why we need equations of motion/equilibrium; how and why to do strain analysis; why we need compatibility equations; why Hooke's law, why plasticity and how to do elastic and plastic analysis; how and why to do mechanics modelling; how to describe boundary conditions for complex engineering problems; why and how to solve a mechanics model based on a practical problem; why and how to use energy methods for stress and deformation analysis; why and how to do stress concentration analysis and its relation to fracture and service life of a component/structure; how and why to do fundamental plastic deformation analysis; how and why the finite element method is introduced and used for stress and deformation analysis.

The students are expected to develop the ability of solving engineering problems by comprehensively using the skills attained above. The students will get familiar with finite element analysis as a research and analysis tool for various real-life problems.
Assumed Knowledge: None.
Timetable: MECH3361 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 Laboratory 6.00 2 1
4 Independent Study 6.00 13
T&L Activities: Lecture: 3 hours of lecture per week

Tutorial: 2 hours per week (including FEA computer lab)

Laboratory: 6 hours Laboratory work per semester

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.

(4) Design (Level 3)
1. Describe boundary conditions, model a problem and use the basic skills to solve simple engineering problems.
2. Use a theoretical solution to guide a design, explain a failure, or optimise a simple structure
(2) Engineering/ IT Specialisation (Level 3)
3. Analyse engineering problems in terms of strength, stress and deformation in relation to the design, fabrication and maintenance of machine and structure components.
4. Understanding the essentials of material selection in design and manufacturing by making use of the physical inherence of the elastic constants.
(1) Maths/ Science Methods and Tools (Level 3)
5. Understanding the concepts, features and principles of stress and strain in mechanical elements subjected to deformation in analyzing engineering problems.
6. Use the strain gauge technique and the principle of strain measurement in measuring strains and calculating stresses.
7. Skills and ability of using finite element method for solving real-life engineering problems.
Assessment Methods:
# Name Group Weight Due Week Outcomes
1 Assignment 1 No 5.00 Week 4 1, 2, 3, 4, 5, 7,
2 Assignment 2 No 5.00 Week 7 1, 2, 3, 4, 5, 7,
3 Assignment 3 No 5.00 Week 10 1, 2, 3, 4, 5, 7,
4 Assignment 4 No 5.00 Week 13 1, 2, 3, 4, 5, 7,
5 Lab Skills and Lab Quiz Yes 10.00 Multiple Weeks 6,
6 Quiz 1 No 10.00 Week 8 (Monday) 5,
7 Quiz 2 No 10.00 Week 13 1, 2, 3, 4, 6,
8 Final Exam No 50.00 Exam Period 1, 2, 3, 4, 5, 7,
Assessment Description: Assignments: Four assignments (5% each)

Week 4: Assignment 1 - Stress & Strain Analyses (12 hrs to complete).

Week 8: Assignment 2 - Stress-Strain Relation + Modelling, Solution & Application (15 hrs to complete).

Week 10: Assignment 3 - Stress Function + Plasticity (12 hrs to complete)

Week 13: Assignment 4 - Finite Element Analysis Essay (10 hrs to complete).

Lab Skills: A laboratory experiment on the strain gauge technique: 10% (5% for individual lab quiz and 5% for the group’s lab report).

Quiz: Two ``in class`` quizzes (10% each).

Quiz 1 in Week 7 covers all material introduced in Weeks 1-6.

Quiz 2 in Week 13 covers all material introduced introduced in Weeks 6-12.

The quizzes are held in the week`s lecture and will need about 40 to 50 minutes to complete. The quizzes are composed of short and long answer questions. One page self-organised equations/notes are allowed to bring to the quizzes.

Final Exam: (50%)

The examination at the end of the semester will be for two hours. Two page self-organised equations/notes are allowed to bring to the final exam.
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.
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.

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 Stress Analysis.
Basic Assumptions.
Introduction.
Week 2 Stress Analysis.
Stress-Strain Relations.
Strain Analysis.
Week 3 Stress-Strain Relations.
Strain Analysis.
Stress Analysis.
Week 4 Stress-Strain Relations.
Strain Analysis.
Stress Analysis.
Assessment Due: Assignment 1
Week 5 Modelling, Solution and Application.
Week 6 Modelling, Solution and Application.
Week 7 Modelling, Solution and Application.
Assessment Due: Assignment 2
Week 8 Plasticity.
Stress Function Method.
Assessment Due: Quiz 1
Week 9 Plasticity.
Stress Function Method.
Week 10 Practice of Finite Element Method in the School’s PC Lab, S345.
Finite Element Method (Theory & Modelling Skills).
Assessment Due: Assignment 3
Week 11 Practice of Finite Element Method in the School’s PC Lab, S345.
Finite Element Method (Theory & Modelling Skills).
Week 12 Practice of Finite Element Method in the School’s PC Lab, S345.
Course Review.
Week 13 Practice of Finite Element Method in the School’s PC Lab, S345.
Assessment Due: Assignment 4
Assessment Due: Quiz 2
Exam Period Assessment Due: Final Exam

Course Relations

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

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

Course Goals

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

Attribute Practiced Assessed
(5) Interdisciplinary, Inclusiveness, Influence (Level 3) No 0%
(6) Communication and Inquiry/ Research (Level 2) No 0%
(4) Design (Level 3) No 25%
(3) Problem Solving and Inventiveness (Level 3) No 0%
(2) Engineering/ IT Specialisation (Level 3) No 22.5%
(1) Maths/ Science Methods and Tools (Level 3) No 52.5%

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.