School of Civil & Mechanical Engineering

Assessment and Feedback Specification Unit: Fundamentals of Mechanical Vibration (MCEN2005) Title: Assignment 2 Activity: This assignment develops the skill of applying a numerical solution technique to a high degree-of-

freedom lumped-parameter vibration system. The activity will lead you to: Be able to use Holzers method to solve for natural frequencies and mode shapes. Recognise that a real marine drive system can be quite complex. Understand how to describe a mode shape. Determine the engine speed that would excite natural torsional vibration modes. Check tour solution by another method.

For a detailed Assessment description and specification of work to be done see the briefing sheet on Blackboard. Assessment criteria, marking distribution and Engineers Australia competencies addressed Value of the assessment based on the rubric provided below: 10% of unit grade. The total assessment mark awarded consists of the sum of the marks awarded to each assessed element. Each item of the assessment rubric shows the ENGINEERS AUSTRALIA Stage 1 competencies to be demonstrated. Level of learning (Levels of learning) is specified for those elements of the assignment when it is appropriate.

Detailed guidelines and feedback This detailed assessment rubric sets out assessment expectations so that you will be aware of the competencies to be developed and the standards expected. This table will also be used for assessing your work to provide feedback on your performance against these standards. This sheet is NOT the assignment cover sheet.

Item

Engineers Australia competencies 1 and (if appropriate) Level of Learning 2

Excellent standard (meets all expectations set out below)

< Competency range > Highest Lowest

< Unsatisfactory

standard (fails to meet minimum

expected)

Perc

enta

ge

of

asse

ssm

ent

Executive summary

3.2. Communication

Brief, but containing all of the essential information required. Clear, concise and appropriate writing style.

No summary or limited background information. Little evidence of studys findings. Irrelevant or wrong information.

5%

Use existing or develop own software for Holzers method

1.1 Science/Engineering fundamentals 1.2 Conceptual understanding 1.3 Special knowledge

Develop a correct computer code or spreadsheet (or another alternative)

Computer code or spreadsheet (or alternative) has one or more errors

20%

Run solution tool to extract solutions to natural frequencies and mode shapes

2.1 Problem solving 2.2 Use of techniques 2.3 Systematic use

Extracted correct results Results incomplete or erroneous

20%

Check solutions via an alternative solution method

2.1 Problem solving 2.2 Use of techniques 2.3 Systematic use

Correct application of alternative method

Inorrect application of alternative method 20%

Calculation of engine speeds 2.1 Problem solving

Engine speeds calculated correctly

Engine speeds calculated incorrectly 10%

Reporting of results

3.2. Communication 3.4 Information use

Clear, easily interpreted presentation of results. Information easily found by reader

Poorly presented results. Information not easily found by reader 10%

Overall presentation (see also line below)

3.4. Information use 3.5. Self-Conduct

High quality presentation. Reproduction of graphics of high quality. Referencing appropriate. Grammar, spelling and syntax good.

Poor presentation. Poor reproduction of graphics. Referencing inadequate or incorrect. Too many grammatical errors.

15%

Special note on presentation

3.5. Self-Conduct

If the submission is deemed to be sufficiently below the acceptable presentation standard, it may be rejected (without marking) for re-

Up to (-25%) possible if rejected on this basis

Assessment Specification and Marking Schedule 1

submission.

Expected time required (after completion of all necessary preparation) to complete this assessment: 4 hours of focused work. Overall mark awarded _____________ out of a maximum of 100 Marker comments: Marker: Date of return: .. Student ..........................................................

Assessment Specification and Marking Schedule 2

School of Civil & Mechanical EngineeringAssessment and Feedback SpecificationFor a detailed Assessment description and specification of work to be done see the briefing sheet on Blackboard.Assessment criteria, marking distribution and Engineers Australia competencies addressedValue of the assessment based on the rubric provided below: 10% of unit grade.Detailed guidelines and feedback

Expected time required (after completion of all necessary preparation) to complete this assessment: 4 hours of focused work.