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MECH7011 - Mechanical Materials (2D)

Title:Mechanical Materials (2D)
Long Title:Mechanical Materials (2D)
Module Code:MECH7011
Duration:1 Semester
Credits: 5
NFQ Level:Intermediate
Field of Study: Mechanical Engineering
Valid From: Semester 1 - 2016/17 ( September 2016 )
Module Delivered in 2 programme(s)
Module Coordinator: GER KELLY
Module Description: Two-dimensional stress and strain; thin-walled pressure vessels; slope and deflection of beams; buckling; strain energy; Mohr's circles.
Learning Outcomes
On successful completion of this module the learner will be able to:
LO1 Construct Mohr's circles of stress and strain.
LO2 Analyse introductory 2D stress/strain problems.
LO3 Predict buckling loads and modes in struts and columns.
LO4 Differentiate between different theories of failure in component design.
LO5 Analyse slopes and deflections in beams under a variety of loads and fixings.
LO6 Design a power transmission shaft to carry combined bending, torsional and axial loads.
LO7 Collect and collate; analyse and criticize; measurement data in the laboratory; and synthesize into technical report form.
Pre-requisite learning
Module Recommendations
This is prior learning (or a practical skill) that is strongly recommended before enrolment in this module. You may enrol in this module if you have not acquired the recommended learning but you will have considerable difficulty in passing (i.e. achieving the learning outcomes of) the module. While the prior learning is expressed as named CIT module(s) it also allows for learning (in another module or modules) which is equivalent to the learning specified in the named module(s).
Incompatible Modules
These are modules which have learning outcomes that are too similar to the learning outcomes of this module. You may not earn additional credit for the same learning and therefore you may not enrol in this module if you have successfully completed any modules in the incompatible list.
Co-requisite Modules
No Co-requisite modules listed

This is prior learning (or a practical skill) that is mandatory before enrolment in this module is allowed. You may not enrol on this module if you have not acquired the learning specified in this section.

Introductory Mechanics, Module 503.

Module Content & Assessment

Indicative Content
Direct Stress
Review of basic concepts: stress; strain; ductiles; brittles; testing and interpretation of results.
Elastic Constants
Isotropic behaviour and constants: Young's modulus (E); Shear modulus (G); Bulk modulus (K); Poisson's ratio (v).
Complex Stress and Strain
Stresses on oblique planes; stress transformation equations; principal stresses and maximum shear stress; Mohr's circle of stress. Strain transformation equations; principal strains and maximum shear strain; Mohr's circle of strain. Strain measurement.
Strain Energy
Strain energy in tension, bending, and torsion; volumetric and distortional strain energies; theories of failure; von Mises stress; relationships between isotropic elastic constants.
Thin-Walled Pressure Vessels
2D stress and strain analysis of cylindrical (pipeline) and spherical (balloon) pressure vessels; cylindrical vessels with hemispherical ends.
Slopes and deflections of simply supported and built-in beams using: Mohr's area-moment theorems; Macaulay's step functions.
Definition of a strut; Euler's buckling load; strut end constraints.
Shaft Design
Torsion of solid and hollow circular shafts; design for combined axial/torsional/bending loads.
Assessment Breakdown%
Course Work40.00%
End of Module Formal Examination60.00%
Course Work
Assessment Type Assessment Description Outcome addressed % of total Assessment Date
Practical/Skills Evaluation Laboratory exercises in beam loadings and strain measurements. 1,7 20.0 Week 9
Open-book Examination Review questions on LOs 2,3. 2,3 10.0 Week 4
Short Answer Questions Review questions on LOs 4,6 4,6 10.0 Week 12
End of Module Formal Examination
Assessment Type Assessment Description Outcome addressed % of total Assessment Date
Formal Exam End-of-Semester Final Examination 2,3,4,6 60.0 End-of-Semester
Reassessment Requirement
Repeat examination
Reassessment of this module will consist of a repeat examination. It is possible that there will also be a requirement to be reassessed in a coursework element.

The institute reserves the right to alter the nature and timings of assessment


Module Workload

Workload: Full Time
Workload Type Workload Description Hours Frequency Average Weekly Learner Workload
Lecture Formal lectures. 2.5 Every Week 2.50
Tutorial Review problems in support of "Lecture" material. 0.5 Every Week 0.50
Lab Strain gauge; beam deflections; shear centre determination. 1.0 Every Week 1.00
Independent & Directed Learning (Non-contact) Backup reading from supplementary texts. 3.0 Every Week 3.00
Total Hours 7.00
Total Weekly Learner Workload 7.00
Total Weekly Contact Hours 4.00
This module has no Part Time workload.

Module Resources

Recommended Book Resources
  • Hearn, E. J. 1997, Mechanics of Materials Vol 1, 3rd Ed., 1,2,3,4,5,6,7,8,9,11,13,14,15,16, Butterworth-Heinemann UK [ISBN: 9780750632658]
Supplementary Book Resources
  • Hibbeler, Russel C. 2007, Mechanics of Materials, 7th Ed., 1,2,3,4,5,6,7,8,9,10,11,12,13, Prentice Hall NJ [ISBN: 978-0132209915]
  • Beer, F. P., Johnston, E. R., DeWoolf, J. T. 2006, Mechanics of Materials, 4th Ed., 1,2,3,4,5,7,8,9,10,11, McGraw-Hill NY [ISBN: 9780073107950]
This module does not have any article/paper resources
This module does not have any other resources

Module Delivered in

Programme Code Programme Semester Delivery
CR_EBIOM_8 Bachelor of Engineering (Honours) in Biomedical Engineering 3 Mandatory
CR_EMECH_8 Bachelor of Engineering (Honours) in Mechanical Engineering 3 Mandatory

Cork Institute of Technology
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