MEEN30020 Mechanics of Solids II

Academic Year 2020/2021

Syllabus:
Introduction to 2D states of stress and strain: stress transformations, principal stresses, maximum shear stress, Mohr's circles of stress and strain, Hooke's law. Strain measurement using strain gauge rosettes. Thin walled pressure vessels.
Introduction to 3D states of stress and strain. Mohr's circle in 3D. Combinations of axial, torsional and bending loading. Yield criteria.
The use of the Unit Load energy method in structural analysis.
Torsion of non-circular sections. The Prandtl stress function. Analysis of solid elliptical, rectangular, narrow rectangular and developed cross-sections, and thin-walled closed cross-sections.
Introduction to fatigue analysis of shafts subjected to a combination of bending, torsion and axial loading.

Laboratory Exercises:
Lab 1: One of the following experiments will be performed by a given group:
(a). Experimental verification of the maximum shear stress yield criterion for a ductile metallic test specimen subjected to combined bending and torsional loading. OR (b). The use of the Unit Load energy method to determine deflections in structures subjected to bending loads. OR (c). Determination of the state of stress in a thin walled pressure vessel using strain gauges.

Lab 2: Introduction to finite element stress analysis. Determination of the state of stress in a typical engineering structure or component.

Note: Lab reports are to be handed in within two weeks after the date of the lab activity.

Tutorials:Tutorials are integral part of the module and the students are strongly advised to attend all tutorial sessions.

Assignments: Two homework assignments will be set during the course of the trimester. Students will typically be given two weeks to complete each assignment.

Recommended Texts:Benham, P. P., Crawford, R. J. Armstrong, C. G., Mechanics of Engineering Materials, 2nd edition, Prentice Hall, 1996.

Reading List:
Course Notes (provided).
G. E. Mase, Theory and Problems of Continuum Mechanics, Schaum's Outline Series, McGraw-Hill, Inc. 1970 (selected chapters).

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Curricular information is subject to change

Learning Outcomes:

On successful completion of this subject the student will be able to:
1. Analyze 2D states of stress and strain, sketch Mohr's Circles and calculate principal values and corresponding principal directions.
2. Analyze 3D states of stress and strain, sketch Mohr's Circles and calculate the principal values and corresponding principal directions of stress and strain tensors.
3. Confidently analyze the state of stress caused by a combination of axial, torsional and bending loads and determine the resulting factor of safety against yielding.
4. Calculate the required diameter or the factor of safety of a shaft subjected to fatigue loading.
5. Perform a finite element stress analysis of a simple engineering component.
6. Present and justify the main assumptions and findings in formulating and solving the stress analysis problems encountered in the course.

Student Effort Hours: 
Student Effort Type Hours
Lectures

30
Tutorial

6
Laboratories

4
Autonomous Student Learning

70
Total

110
Approaches to Teaching and Learning:
A problem-based approach is taken in lectures and tutorials, whereby the theory is taught through examples. In addition, a comprehensive book of course notes is provided which contains many worked examples, including recent examination papers, which allow students to master individual topics at their own pace. The lecturers are very approachable and are always available to meet with students to discuss any topic for which they require further clarification. 
Requirements, Exclusions and Recommendations

Not applicable to this module.


Module Requisites and Incompatibles
Pre-requisite:
CVEN20010 - Mechanics of Solids I, MEEN20040 - Mechanics of Solids I


 
Assessment Strategy  
Description Timing Open Book Exam Component Scale Must Pass Component % of Final Grade
Multiple Choice Questionnaire (Short): Brightspace-based MCQ Week 4 n/a Graded No

10
Multiple Choice Questionnaire (Short): Brightspace-based MCQ Week 10 n/a Graded No

10
Multiple Choice Questionnaire (Short): Brightspace-based MCQ Week 7 n/a Graded No

10
Lab Report: Online Laboratory Experiment to demonstrate a concept discussed in lectures.
Video will demonstrate lab session and provide data for your analysis.
Lab Report to be submitted via Brightspace.		 Throughout the Trimester n/a Graded No

10
Examination: Final Brightspace-based MCQ exam 2 hour End of Trimester Exam Yes Graded No

50
Lab Report: Online lab - Finite Element Stress Analysis (Software based).
Video will demonstrate lab session supplemented by tutorial sessions.
Lab report to be submitted via Brightspace:.
 Varies over the Trimester n/a Graded No

10

Carry forward of passed components
Yes
 
Resit In Terminal Exam
Autumn Yes - 2 Hour
Please see Student Jargon Buster for more information about remediation types and timing. 
Feedback Strategy/Strategies

• Feedback individually to students, post-assessment
• Group/class feedback, post-assessment

How will my Feedback be Delivered?

MCQ Quizzes: Grade will be posted automatically on submission of quiz. Laboratory Reports: Will be submitted via Brightspace and a short individual feedback will be provided (also via Brightspace) by the teaching assistant in charge of the lab. Final Examination: Breakdown will be posted shortly after the release of final grades for the module.