Mostra el registre d'ítem simple
A high order finite element formulation for the simulation of 3D Magneto-Mechanical problems with application to MRI scanners
dc.contributor.author | Seoane, Marcos |
dc.contributor.author | Ledger, Paul D. |
dc.contributor.author | Gil Ruiz, Antonio Javier |
dc.contributor.author | Zlotnik, Sergio |
dc.contributor.author | Mallett, Mike |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental |
dc.date.accessioned | 2020-04-03T07:47:18Z |
dc.date.issued | 2019 |
dc.identifier.citation | Seoane, M. [et al.]. A high order finite element formulation for the simulation of 3D Magneto-Mechanical problems with application to MRI scanners. A: Conference on the Computation of Electromagnetic Fields. "Proceedings 22nd International Conference on the Computation of Electromagnetic Fields". 2019, p. 1-4. |
dc.identifier.uri | http://hdl.handle.net/2117/182986 |
dc.description.abstract | Transient magnetic fields generated by the gradient coils in MRI scanners induce eddy currents in their conducting components, which lead to vibrations, imaging artefacts, noise and the dissipation of heat. Heat dissipation can boil off the helium used to cool the super conducting magnets and, if left unchecked, will lead to a magnet quench. Understanding the mechanisms involved in the generation of these vibrations, and the heat being deposited in the cryostat, are key for a successful MRI scanner design. This requires the solution of the coupled physics magneto-mechanical problem, which will be addressed in this work. For the accurate simulation of this problem, a Lagrangian approach is used, which leads to a staggered scheme. This is discretised by high order finite elements leading to accurate solution. We demonstrate the success of our scheme by applying to realistic MRI scanner configurations and increase the efficiency of our technique by using a reduced order model based on the proper orthogonal decomposition. New symmetry conditions and an approach to map the current source to the space of divergence free functions are added as novel contributions. |
dc.format.extent | 4 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Matemàtiques i estadística |
dc.subject | Àrees temàtiques de la UPC::Matemàtiques i estadística::Investigació operativa::Simulació |
dc.subject.lcsh | Automatic control |
dc.subject.lcsh | Statistical mechanics |
dc.subject.other | Electromagnetic coupling |
dc.subject.other | Eddy currents |
dc.subject.other | Finite element analysis |
dc.subject.other | Nuclear magnetic resonance |
dc.subject.other | Vibrations |
dc.subject.other | Reduced order systems |
dc.title | A high order finite element formulation for the simulation of 3D Magneto-Mechanical problems with application to MRI scanners |
dc.type | Conference report |
dc.subject.lemac | Control automàtic |
dc.subject.lemac | Mecànica estadística |
dc.contributor.group | Universitat Politècnica de Catalunya. LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria |
dc.description.peerreviewed | Peer Reviewed |
dc.subject.ams | Classificació AMS::70 Mechanics of particles and systems::70Q05 Control of mechanical systems |
dc.subject.ams | Classificació AMS::82 Statistical mechanics, structure of matter::82D Applications to specific types of physical systems |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 26619799 |
dc.description.version | Postprint (author's final draft) |
dc.date.lift | 10000-01-01 |
local.citation.author | Seoane, M.; Ledger, P.; Gil Ruiz, Antonio Javier; Zlotnik, S.; Mallett, M. |
local.citation.contributor | Conference on the Computation of Electromagnetic Fields |
local.citation.publicationName | Proceedings 22nd International Conference on the Computation of Electromagnetic Fields |
local.citation.startingPage | 1 |
local.citation.endingPage | 4 |