College of EngineeringColeg Peirianneg

Declaration of interest in Code_Aster

Llion M. Evans1,2

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

Engineering at Swansea University

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

▪ 10th in UK for Engineering Research

▪ Top 5 for Student Satisfaction

▪ 9th for Graduate Prospects

▪ 120% growth since 2012

▪ New £450M Bay Campus

▪ Phase 1 complete in 2016

▪ Phase 2 ongoing

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

Zienkiewicz Centre for Computational Engineering

Over the last 30 years Swansea University has been at the forefront of internationalresearch in the area of computational engineering.

We have pioneered the development of numerical techniques, such as the finite elementmethod and associated computational procedures that have enabled the solution of manycomplex engineering problems. This is recognised as one of the top 100 discoveries anddevelopments in UK universities to have changed the world.

The Finite Element Method developed at Swansea University by Professor OlekZienkiewicz in 1967 has enabled us to take a lead in computational modelling techniquesthat allow engineers to design ever more challenged structures and processes, with theminimal use of expensive experimental testing.

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

Zienkiewicz Centre for Computational Engineering

Olek Zienkiewicz1921––2009

O.C. Zienkiewicz and Y.K. Cheung, Finite elements in the solution of field problems, The Engineer. 507-510, 1965.

Flow under a dam

Computational solution(a) mathematical model(b) approximation(c) computer solution(d) analysis of the results

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

Zienkiewicz Centre for Computational Engineering

Biomedical Engineering

and Rheology

Computational Methods

in Engineering

Methods in

Manufacturing

Solids, Structures and

Coupled System

Aerospace Engineering

and Structures

Energy and

Environment

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

The history of the Zienkiewicz Centre may be traced back to the early 1960s,when the late Professor Olek C. Zienkiewicz became Head of the CivilEngineering Department in Swansea.

The computational mechanics researchers from different engineeringdisciplines have been assembled together to form a single group. Thisresearch grouping was initially referred to as the Civil and ComputationalEngineering Centre. In honour of Professor Zienkiewicz, this Research Centreis now known as the Zienkiewicz Centre for Computational Engineering.

The Zienkiewicz centre currently has more than forty full‒time, part–timeand emeritus academic staff members, nearly one hundred graduatestudents and a large number of postdocs and researchers.

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

Code_Aster

Why Code_Aster?Use of Code_Aster at the University of Swansea is a relatively new endeavour. This has come aboutthrough a collaborative project with the United Kingdom Atomic Energy Authority (UKAEA) and thedesire to use FEM code that is UK nuclear regulator approved and is open source.

How is Code_Aster being used?Currently the main usage of Code_Aster is automated simulation of laboratory experiments. This isfacilitated through the user-friendly python interface that allows easy parameterisation ofsimulations. Additionally, because it is open source, many concurrent simulations may be run (highthroughput computing) without increasing licence cost being a limit to the number of simulationspossible.

Future ambitions.The main research interest of the group using Code_Aster is image-based simulation whereby 3Dimages (e.g. from X-ray tomography) are converted into ultra-high resolution meshes. This is inorder to simulate components ‘as manufactured’ rather than ‘as designed’ to quantify the impact ofminor deviations from design on performance. This approach is computationally expensive and istoo demanding for the majority of FEM software. When available the use of Code_Aster HPC forimage-based simulation will be investigated.

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

Design/Image based simulation

10mm

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Image-Based Finite Element Methods (IBFEM)

Simulate ‘as manufactured’ instead of ‘as designed’.

Benefits:

– Real components at microscale.

– Complex architectures.

– Include fabrication defects

• flaws, cracks, porosity

– Model actual test specimen

• virtual qualification

10mm

> 100 million elements

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Virtual qualification

T0 = 150 °C

10 MW·m-2

Heat removed by coolant

CAD IBFEM

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

Image-Based Finite Element Method for Industry

Swansea Bay, 9-12 September 2019www.ibfem.co.uk/events

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

References

1. Ll.M. Evans, T. Minniti, T. Barrett, A. v. Müller, L. Margetts, “Virtual qualification of novel heat exchanger components with the image-based finite element method”, Proceedings of 9th Conference on Industrial Computed Tomography (iCT), Padova, Italy, February 2019. http://www.ndt.net/?id=23660

2. D. Micieli, T. Minniti, Ll.M. Evans, G. Gorini, “Accelerating Neutron Tomography experiments through Artificial Neural Network based reconstruction”, Scientific Reports, Nature Research, 9, no. 2450, 2019. https://doi.org/10.1038/s41598-019-38903-1

3. Ll.M. Evans, L. Margetts, P.D. Lee, C.A.M. Butler, E. Surrey, “Image based in silico characterisation of the effective thermal properties of a graphite foam”, Carbon, Vol. 143, pp. 542-558, 2018. https://doi.org/10.1016/j.carbon.2018.10.031

4. Ll.M. Evans, T. Minniti, M. Fursdon, M. Gorley, T. Barrett, F. Domptail, E. Surrey, W. Kockelmann, A. v. Müller, F. Escourbiac, A. Durocher, “Comparison of X-ray and neutron tomographic imaging to qualify manufacturing of a fusion divertor tungsten monoblock”, Fusion Engineering and Design, Vol. 134, pp. 97-108, 2018. https://doi.org/10.1016/j.fusengdes.2018.06.017

5. M. Fursdon, T. Barrett, F. Domptail, Ll.M. Evans, N. Luzginova, N.H. Greuner, J-H. You, M. Li, M. Richou, F. Gallay, “The development and testing of the thermal break divertor monoblock target design delivering 20MWm-2 heat load capability”, Physica Scripta, Vol. 2017, No. T170, 2017. https://doi.org/10.1088/1402-4896/aa8c8e

6. Ll.M. Evans, J.D. Arregui-Mena, P.M. Mummery, R. Akers, E. Surrey, A. Shterenlikht, M. Broggi, L. Margetts, “Use of massively parallel computing to improve modelling accuracy within the nuclear sector”, The International Journal of Multiphysics, Vol. 10(2), pp. 215-236, 2016. http://dx.doi.org/10.21152/1750-9548.10.2.215

7. Ll.M. Evans, L. Margetts, V. Casalegno, L.M. Lever, J. Bushell, T. Lowe, A. Wallwork, P.G. Young, A. Lindemann, M. Schmidt, P.M. Mummery, “Transient Thermal Finite Element Analysis of CFC-Cu ITER Monoblock Using X-ray Tomography Data” Fusion Engineering and Design., Vol 100, pp. 100-111, 2015. http://dx.doi.org/10.1016/j.fusengdes.2015.04.048

8. Ll.M. Evans, L. Margetts, V. Casalegno, F. Leonard, T. Lowe, P.D. Lee, M. Schmidt, P.M. Mummery, “Thermal Characterisation of Ceramic/Metal Joining Techniques for Fusion Applications Using X-ray Tomography” Fusion Engineering and Design, Vol 89(6), pp. 826-836, 2014. http://dx.doi.org/10.1016/j.fusengdes.2014.05.002

Declaration of interest in Code_AsterCollege of EngineeringColeg Peirianneg

Contact

Dr Llion Marc Evans | EPSRC Research Fellow | llion.evans@swansea.ac.ukA211, Engineering Central, College of Engineering, Bay CampusSwansea University Bay Campus, Swansea SA1 8EN, UK

@LlionEvans

www.researchgate.net/profile/Llion_Evans

www.linkedin.com/in/llionevans