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MEC2301 Design of Machine Elements

Semester 2, 2013 On-campus Toowoomba
Units : 1
Faculty or Section : Faculty of Engineering & Surveying
School or Department : Mechanical and Mechatronic Engineering
Version produced : 21 July 2014

Contents on this page

Staffing

Examiner: Chris Snook
Moderator: Jayantha Epaarachchi

Requisites

Pre-requisite: MEC2402 or Students must be enrolled in the following Program: MEPR

Other requisites

Recommended prior or concurrent study: MEC2401 or MEC2405

Synopsis

Design is one of the most important engineering functions for it is through design that new products and processes are born and that old ones are improved. Design requires a breadth of knowledge extending over many areas, and a sound analytical ability. It requires an ability to recognise the phenomena involved and to synthesise an integrated solution. Design requires sound engineering judgement as well as a good grasp of the underlying basic science and mathematics. This course aims to integrate the knowledge that the student has gained earlier in their program and to focus the student's analytical skills towards synthesis of solutions by working through the design of several simple, commonly used devices.

Objectives

The course objectives define the student learning outcomes for a course. On completion of this course, students should be able to:

  1. identify appropriate analytical models to describe and predict the behaviour of standard machine components;
  2. reduce the behaviour of a complex machine into appropriate sub- systems/elements and then analyse the behaviour of their elements;
  3. apply stress analysis theory, fatigue theory and appropriate criteria of failure to the design of simple machine elements;
  4. analyse and evaluate forces and stresses within a spur gear system;
  5. design simple power transmission systems;
  6. select appropriate mechanical components from manufacturers' catalogues;
  7. design springs, plain bearings and fluid seals;
  8. apply codes and standards to machine component design;
  9. communicate the results of a design assignment by means of drawings and a design report; and
  10. make appropriate use of available computer aided design software.

Topics

Description Weighting(%)
1. Stress Concentration 5.00
2. Fracture 5.00
3. Fatigue 10.00
4. Buckling 10.00
5. Threaded Fasteners and Power Screws 10.00
6. Rivetted, Welded and Bonded Joints 10.00
7. Springs 10.00
8. Bearings 10.00
9. Belt and Chain Drives 5.00
10. Spur Gears 10.00
11. Shafts and Shaft Fittings 10.00
12. Brakes and Clutches 5.00

Text and materials required to be purchased or accessed

ALL textbooks and materials available to be purchased can be sourced from USQ's Online Bookshop (unless otherwise stated). (https://bookshop.usq.edu.au/bookweb/subject.cgi?year=2013&sem=02&subject1=MEC2301)

Please contact us for alternative purchase options from USQ Bookshop. (https://bookshop.usq.edu.au/contact/)

  • 1999, Design Standards for Mechanical Engineering Students (SAA HB 6), Standards Association of Australia.
  • Juvinall, RC & Marshek, KM 2012, Fundamentals of Machine Component Design, 5th edn, John Wiley & Sons, Hoboken, NJ.

Reference materials

Reference materials are materials that, if accessed by students, may improve their knowledge and understanding of the material in the course and enrich their learning experience.
  • Avallone, E, Baumeister, T & Sadegh, A 2006, Marks Standard Handbook for Mechanical Engineers, McGraw Hill, New York, NY.
    (Any version will suffice.)
  • Budynas, R & Nisbett, K 2007, Shigley's Mechanical Engineering Design (SI units), 8th edn, McGraw Hill, New York, NY.
  • Deutschman, AD, Michels, WJ & Wilson, CE 1996, Machine Design Theory and Practice, MacMillan, New York, NY.
  • Ugural, AC 2004, Mechanical Design - An Integrated Approach, McGraw Hill, Boston, MA.

Student workload requirements

Activity Hours
Assessments 26.00
Examinations 2.00
Lectures 39.00
Private Study 75.00
Tutorials 13.00

Assessment details

Description Marks out of Wtg (%) Due Date Notes
ASSIGNMENT 1 200 20 28 Aug 2013
ASSIGNMENT 2 200 20 16 Oct 2013
2 HOUR OPEN EXAMINATION 600 60 End S2 (see note 1)

NOTES
  1. Student Administration will advise students of the dates of their examination during the semester.

Important assessment information

  1. Attendance requirements:
    It is the students' responsibility to attend and participate appropriately in all activities (such as lectures, tutorials, laboratories and practical work) scheduled for them, and to study all material provided to them or required to be accessed by them to maximise their chance of meeting the objectives of the course and to be informed of course-related activities and administration.

  2. Requirements for students to complete each assessment item satisfactorily:
    To satisfactorily complete an individual assessment item a student must achieve at least 50% of the marks or a grade of at least C-. (Depending upon the requirements in Statement 4 below, students may not have to satisfactorily complete each assessment item to receive a passing grade in this course.)

  3. Penalties for late submission of required work:
    If students submit assignments after the due date without (prior) approval of the examiner then a penalty of 5% of the total marks gained by the student for the assignment may apply for each working day late up to ten working days at which time a mark of zero may be recorded. No assignments will be accepted after model answers have been posted.

  4. Requirements for student to be awarded a passing grade in the course:
    To be assured of receiving a passing grade in a course a student must obtain at least 50% of the total weighted marks for the course.

  5. Method used to combine assessment results to attain final grade:
    The final grades for students will be assigned on the basis of the weighted aggregate of the marks (or grades) obtained for each of the summative assessment items in the course.

  6. Examination information:
    In an Open Examination, candidates may have access to any material during the examination except the following: electronic communication devices, bulky materials, devices requiring mains power and material likely to disturb other students.

  7. Examination period when Deferred/Supplementary examinations will be held:
    Any Deferred or Supplementary examinations for this course will be held during the examination period at the end of the semester of the next offering of this course.

  8. University Student Policies:
    Students should read the USQ policies: Definitions, Assessment and Student Academic Misconduct to avoid actions which might contravene University policies and practices. These policies can be found at http://policy.usq.edu.au.

Assessment notes

  1. The due date for an assignment is the date by which a student must despatch the assignment to the USQ. The onus is on the student to provide proof of the despatch date, if requested by the Examiner.

  2. Students must retain a copy of each item submitted for assessment. This must be despatched to USQ within 24 hours if required by the Examiner.

  3. In accordance with University Policy, the Examiner may grant an extension of the due date of an assignment in extenuating circumstances.

  4. If electronic submission of assessments is specified for the course, students will be notified of this in the course Introductory Book and on the USQ Study Desk. All required electronic submission must be made through the Assignment Drop Box located on the USQ Study Desk for the course, unless directed otherwise by the examiner of the course. The due date for an electronically submitted assessment is the date by which a student must electronically submit the assignment. The assignment files must be submitted by 11.55pm on the due date using USQ time (as displayed on the clock on the course home page; that is, Australian Eastern Standard Time).

  5. If the method of assessment submission is by written, typed or printed paper-based media students should (i) submit to the Faculty Office for students enrolled in the course in the on-campus mode, or (ii) mail to the USQ for students enrolled in the course in the external mode. The due date for the assessment is the date by which a student must (i) submit the assessment for students enrolled in the on-campus mode, or (ii) mail the assessment for students enrolled in the external mode.

  6. The Faculty will NOT normally accept submission of assessments by facsimile or email.

  7. Students who do not have regular access to postal services for the submission of paper-based assessments, or regular access to Internet services for electronic submission, or are otherwise disadvantaged by these regulations may be given special consideration. They should contact the examiner of the course to negotiate such special arrangements prior to the submission date.

  8. Students who have undertaken all of the required assessments in a course but who have failed to meet some of the specified objectives of a course within the normally prescribed time may be awarded one of the temporary grades: IM (Incomplete - Make up), IS (Incomplete - Supplementary Examination) or ISM (Incomplete -Supplementary Examination and Make up). A temporary grade will only be awarded when, in the opinion of the examiner, a student will be able to achieve the remaining objectives of the course after a period of non directed personal study.

  9. Students who, for medical, family/personal, or employment-related reasons, are unable to complete an assignment or to sit for an examination at the scheduled time may apply to defer an assessment in a course. Such a request must be accompanied by appropriate supporting documentation. One of the following temporary grades may be awarded IDS (Incomplete - Deferred Examination; IDM (Incomplete Deferred Make-up); IDB (Incomplete - Both Deferred Examination and Deferred Make-up).

  10. This is a communication benchmark course and the assessment of this course will be associated with the demonstration of communication skills.

  11. Harvard (AGPS) is the referencing system required in this course. Students should use Harvard (AGPS) style in their assignments to format details of the information sources they have cited in their work. The Harvard (AGPS) style to be used is defined by the USQ Library's referencing guide.
    http://www.usq.edu.au/library/referencing