John P. Morrissey

John P. Morrissey

Research Scientist in Granular Mechanics

University of Edinburgh

Biography

J.P. is an experienced research scientist specialising in particulate mechanics and the Discrete Element Method (DEM). J.P. completed his Ph.D. at the University of Edinburgh studying in the field of granular mechanics and has over 10 years research experience covering both the experimental and numerical fields.

J.P. was the developer of a novel DEM contact model that captures the behaviour of complex cohesive granular solids. This contact model has been implemented in the commerical DEM code EDEM (now Altair EDEM) as the Edinburgh Elasto-Plastic Adhesion Model (EEPA). J.P. was also heavily involved in the development of the Edinburgh Powder Tester (EPT) whose technology was later licenced to Freeman Technologies for use in the Freeman UPT.

Working the the numerical field of DEM, programming, data analysis and visualisation are common tasks and python, Julia and C++ are often the tools of choice.

Download my resumé.

Interests
  • Mechanics of Particulate Solids
  • Computational Methods
  • Numerical Simulation
  • Data Analytics
Education
  • Ph.D. in Civil Engineering, 2013

    University of Edinburgh

  • M.Eng. in Civil Engineering, 2009

    University of Edinburgh

  • B.Eng. (Ord.) in Civil Engineering, 2006

    Cork Institute of Technology

Skills

icons8-solidworks-flow-simulation
Numerical Simulations

90%

Python

90%

icons8-matlab
MATLAB

75%

Statistics

80%

R

10%

Programming

25%

Git

80%

GitLab

50%

GitHub

30%

Experience

 
 
 
 
 
University of Edinburgh
Research Associate
Jan 2013 – Present Edinburgh, Scotland, UK

Responsibilities include:

  • Modelling & Simulation
  • Experimental analysis and Calibration
  • Data Analysis
 
 
 
 
 
University of Edinburgh
Consultant
Jul 2013 – Present Edinburgh, Scotland, UK
Consultant in the field of particulate mechanics
 
 
 
 
 
University of Edinburgh
Tutor & Demonstrator
Oct 2009 – May 2014 Edinburgh, Scotland, UK

Tutor & Demonstrator for several undergraduate courses including:

  • Soil Mechanics 2
  • Geotechnical Engineering 3
  • Computational Geomechanics 5
 
 
 
 
 
MHL & Associates Consulting Engineers
Engineering Technician
Sep 2005 – Aug 2006 Cork, Ireland
Engineering Technician responsible for the prepartion of technical drawings, design calculations and project documents.

Projects

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TUSAIL Project
TUSAIL is an Innovative Training Network funded by Horizon 2020 which comprises 16 academic and industrial partners in total, led by the University of Edinburgh.
Discrete Element Modelling of High-Speed Railway Embankments
The aim is to develop a new understanding of the micromechanics of railway trackbed subjected to dynamic loads induced by high speed trains. This should lead to safer design of high-speed railway systems which require less maintenance and, therefore, are more sustainable.
Models for the Manufacturing of Particulate Process (Models MPP)
A project focused on establishing a generic framework and core capability to improve industrial productivity.
VELaSSCo: Visualization for Extremely Large-scale Scientific Computing
The Vision of VELaSSCo is to provide new approaches for visual analysis of large-scale simulations for the Exabyte era.
Transporting, handling and storing behaviour of iron ore fines
This project attempts to deal with the challenges associated with handling and storage of cohesive solids in the mining industry.
Discrete Element Modelling of Iron Ore Pellets to Include the Effects of Moisture and Fines
Characterisation and calibration of iron ore fines for DEM simulations
Granular Mechanics and Industrial Infrastructure Research Group
The Granular Mechanics and Industrial Infrastructure group is part of the School of Engineering at the University of Edinburgh. This research group uses a combination of experimental testing, analytical methods and simulations to investigate the behaviour of a diverse range of granular materials.

Recent & Upcoming Talks

Recent Publications

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2021. Model driven design for twin screw granulation using mechanistic-based population balance model. International Journal of Pharmaceutics , vol.607, p.21. Available at: https://doi.org/10.1016/j.ijpharm.2021.120939

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2019. An experimentally validated DEM simulation of a monotonic triaxial test on railway ballast including the membrane boundary condition. Proceedings of the 7th UK–China International Particle Technology Forum , pp.222-223.

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2019. Application of Digital Twin in the Particulate Process: Impact Pin Mill and Twin Screw Granulation. Proceedings of the 7th UK–China International Particle Technology Forum , pp.130-131.

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2019. Proceedings of the 7th UK–China International Particle Technology Forum. Proceedings of the 7th UK–China International Particle Technology Forum , p.251.

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2019. Multiscale Modelling of a Twin Screw Granulator. Royal Society of Chemistry Formative Formulation Workshop . Available at: https://bit.ly/Multiscale_TSG

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Posters

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Multiscale Modelling of a Twin Screw Granulator

Multiscale Modelling of a Twin Screw Granulator

Poster at Royal Society of Chemistry Formative Formulation Workshop, Maxwell Centre, University of Cambridge

Hybrid Multiscale Modelling of a Twin Screw Granulator

Hybrid Multiscale Modelling of a Twin Screw Granulator

Poster at 8th World Congress on Particle Technology, Orlando, FL., USA

Modelling a Twin Screw Granulator using the Discrete Element Method

Modelling a Twin Screw Granulator using the Discrete Element Method

Poster at 8th World Congress on Particle Technology, Orlando, FL., USA

Dealing with a sticky situation: Modelling cohesive frictional granular solids

Dealing with a sticky situation: Modelling cohesive frictional granular solids

Poster at Telford-UKIERI workshop on Anisotropic, heterogeneous and cellular materials: From microarchitecture to macro-level response