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Trinity College Dublin

Personal Information
College Photo Name Monaghan, John Michael
Main Department Mechanical & Manuf. Eng
College Title Adjunct Assistant Prof/Fellow Emeritus
E-mail john.monaghan@tcd.ie
College Tel +353 1 896 1464
Web http://people.tcd.ie/jmonghan
Fax +353 1 679 5554
 
Representations
Details Date
External Examiner The Queens University Belfast 2000 to 2005
External Examiner - University of Limerick 1999 - 2001
External Examiner - University College Cork 2003 -Present
External Examiner - Dublin Institute of Technology 2002-2004
External Examiner - Cork Institute of Technology 2003 - Present
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Membership of Professional Institutions, Associations, Societies
Details Date From Date To
C.Eng. FIEI
FIMech.E
F.IEE
F.IOM
 
Awards and Honours
Award Date
Fellow of Trinity College Dublin (FTCD) 1993
 
Description of Research Interests
(a) MICROFORMING ANALYSIS: form rolling of various geometrical shaped grooves on wire in the sub-millimetre range with particular emphasis on the ‘size effect’ as parts reduce in dimensions. Elastoplastic FEA is used to predict the material flow and the occurrence of likely internal defects in the miniature parts due to residual tensile stresses. (b) FRICTION STIR WELDING: experimental and viscoplastic FEA of Friction Stir Welding of 2024 aircraft fuselage panels. The experimental work involves the production of butt joints while the viscoplastic FEA is being used to simulate the material flow, temperature distribution and stress distributions within the welded sheets. (c) DEFORMATION BEHAVIOUR OF ALUMINIUM METALLIC FOAMS: experimental and elastoplastic FEA of the deformation behaviour of aluminium metallic foams subject to compression, bending, impact and penetration tests. (d) METALFORMING SIMULATIONS: Optimisation of the cold forging sequences used for the manufacture of high strength aerospace components. The work involves elastoplastic FEA simulations of the flow of the workpiece material and the stresses induced in the forging tooling during combined forging/extrusion operations on difficult to form materials. The use of elastoplastic FEA for the optimisation of the design of the tooling used in cold forming processes. (e) FORM ROLLING: experimental and FE analysis of macro Form Rolling process used in the production of grooves and other complex features on the shanks of high strength aerospace fasteners. This work involves the optimisation of the tool design process in an effort to reduce lengthy and costly physical prototyping. (f) SHEET FORMING SIMULATIONS – (A) ANALYSIS OF RIVETED JOINTS: Elastoplastic FEA and experimental analyses of the behaviour of riveted 2024 aluminium and GLARE sheets subjected to static and dynamic loading. (b) DENTING OF AIRCRAFT PANELS: experimental and elastoplastic FEA of the deformation behaviour and resulting residual stresses induced in 2024 aircraft fuselage panels due to indentation by various shaped indenters – e.g. hail; baggage trucks, spanners, etc
 
Research Interests
Aeronautics Airframe Structures and Materials Computational Mechanics Contact Stress Analysis
Continuum Mechanics Fatigue of materials Machine Design Manufacturing (Mechanical Engineering)
Manufacturing Engineering Manufacturing Processes (Industrial Engineeri Manufacturing engineering Materials Joining
Mechanical Engineering Mechanics Medical Devices Engineering Plasticity
Precision Engineering Process Engineering Production Engineering Solid Mechanics
Structures & Materials (Aero./Astro. Engineer
 
Research Projects
Project title Analysis of pump flow
Summary €49,000.00
Funding Agency EI –HE/99/312
Programme
Type of Project
Date from
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Project title Deep Drawing
Summary €13,967.00
Funding Agency Industrial – ABS Pumps
Programme
Type of Project
Date from
Date to
Person Months


Project title Product Development
Summary €300,000.00
Funding Agency EI – ATRP
Programme
Type of Project
Date from
Date to
Person Months


Project title Rapid Prototyping
Summary €57,138.00
Funding Agency EI- ATRP
Programme
Type of Project
Date from
Date to
Person Months


Project title Metal Forming Analysis
Summary €233,000.00
Funding Agency EI – PAT’s MPRC (SO2014)
Programme
Type of Project
Date from
Date to
Person Months


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Publications and Other Research Outputs
Peer Reviewed
Thermomechanical modelling friction stir welding aluminium 2024-T3, Int. J. Computational Materials Science and Surface Engineering, 2, 1/2, (2009), 63 - 72p, Daniela Butan, John Monaghan, [eds.]
A.Smyth, J.Monaghan, Analysis and optimisation of a cold forging die, The Engineers Journal, 59, (2), 2005, p687 - 690
K.Lacey, C. MacCormack, J.Monaghan, Finite element analysis of dented stiffened structures, SME Technical Paper, TPO4PUB226, 2004, p1 - 7
G.Eyres, J.Monaghan, Three-dimensional finite element analysis of a flat die form rolling process, The Engineers Journal, 58, (10), 2004, p687 - 690
K.Lacey, C. MacCormack, J.Monaghan, Finite element analysis of the effects of dents on the ultimate compressive strength of aircraft panels, The Engineers Journal, 58, (9), 2004, p621 - 624
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Last Updated:23-APR-2014