Registry

Module Specifications

Archived Version 2005 - 2006

Module Title	Strength of Materials II
Module Code	MM212
School	School of Mechanical and Manufacturing Engineering
Online Module Resources
Module Co-ordinator	Prof Lisa Looney	Office Number	Ag40
Level	2	Credit Rating	5
Pre-requisite	MM211
Co-requisite	None

Module Aims

To make the students fully familiar with elastic and plastic deformation of materials including fracture and failure modes and mechanisms. To enable student to analyse more complex structures then those considered in prerequisite module, to consider plasticity in greater depth and to enable them apply energy based analysis methods.

Learning Outcomes

Having successfully completed this module the student will: 1. Be aware of failure from crack growth, corrosion, fatigue and creep deformation, and methods of analysis. 2. Be able to carry out calculations relevant to real struts, and to apply stress/ strain theory to shell and plate structures 3. Be able to derive and apply energy methods and Castigliano's theorems to the solution of simple structural problems; 4. Understand the behaviour of materials in plasticity regime 5. Be able to carry out calculations for particular structural elements under complex loading, in the plastic regime.

Indicative Time Allowances
	Hours
Lectures	24
Tutorials	12
Laboratories	12
Seminars	0
Independent Learning Time	27

Total	75
Placements
Assignments

NOTE

Assume that a 5 credit module load represents approximately 75 hours' work, which includes all teaching, in-course assignments, laboratory work or other specialised training and an estimated private learning time associated with the module.

Indicative Syllabus

¿ Yield Criteria: Two and three dimensional stress and strain yield criteria -introduction to the theory of elasticity, plasticity and stress functions ¿ Fracture Mechanics: Stress concentration, strain energy release rate, linear elastic FM ¿ Fatigue: Stress cycles, test methods, micro-mechanisms of fatigue ¿ Creep: Stress - time - temperature relationship, creep rupture testing ¿ Failure by corrosion: Common corrosion reactions, forms of corrosion, materials loss rates ¿ Advanced Analysis of Structures Instability in Columns Revision of buckling theory, pin ended columns, characteristics for real struts, eccentric loading, empirical formulae for design Thin Plates and Shells Assumptions, Moments and curvature for pure bending, Load/ shear force/ bending moment relationships, Deflection / slope and loading relationships, Plate subjected to uniform pressure, Plate with circular hole ¿ Energy Methods for analysing structural systems. Work and complementary work, Work energy principle for calculating deflections, Castigliano's theorems, Dynamic loading ¿ Plasticity Plastic bending and collapse of beams. Plastic torsion of shafts, Plasticity in thick walled cylinders, and rotating thin discs, Residual stress distributions after plastic deformations

Assessment
Continuous Assessment	20%	Examination Weight	80%

Indicative Reading List

PP Benham, RJ Crawford & CG Armstrong, Mechanics of Engineering Materials, 2nd ed. Longman Group Ltd., 1996. 1. Hearn, E. J., Mechanics of Materials 1 & 2 : an introduction to the mechanics of elastic and plastic materials. - 3rd ed. - Boston : Butterworth-Heinemann, 1997 2. Collins, J.A. Failure of Materials in Mechanical Design 2nd ed J Wiley & Sons, 1993. 3. A.P. Boresi, R.J. Schmidt, O.M. Sidebottom, Advanced Mechanics of Materials 5th ed, J Wiley & Sons, 1992. 4. D.W.A. Rees, Basic Solid Mechanics, Mac Millan Press Ltd., 1997. 5. D Roylance, Mechanics of Materials, J Wiley & Sons, 1996.

Programme or List of Programmes

BME

BEng Manufacturing Engineering &Business

BSSA

Study Abroad (DCU Business School)

BSSAO

Study Abroad (DCU Business School)

CAM

B.Eng. Mechanical & Manufacturing Eng

ECSA

Study Abroad (Engineering & Computing)

ECSAO