test_moissonnage_selune
type: Agent

Modelling and characterisation of smart materials for the design of magneto-electric devices
type: Dataset
contact point: Organization
  fn: CCSD
keyword: theses
keyword: spiengineering-sciences-physics
keyword: caracterisation-experimentale
keyword: infoeu-reposemanticsdoctoralthesis
keyword: finite-element-modelisation
keyword: constitutive-laws
keyword: couplages-magneto-elastiques
keyword: experimental-caracterisation
keyword: magneto-electric-composite-structures
keyword: modelisation-elements-finis
keyword: magneto-elastic-couplings
keyword: lois-de-comportement
keyword: deformation-de-magnetostriction
keyword: physphysics-physics
keyword: structures-composites-magneto-electriques
keyword: magnetostriction-strain
landing page: https://theses.hal.science/tel-00274483
description: This study deals with the experimental characterization and the modelling of giant magnetostrictive materials and on their association with piezoelectric materials. An experimental benchmark dedicated to the survey of magneto-mechanics coupling has been achieved. This platform allows the creation in a bulk ferromagnetic sample of a homogeneous area of magnetic and mechanical sollicitations. An adapted instrumentation measures the magneto-mechanical response of the sample to these sollicitations. This experimenal benchmark has been used to characterise the behaviour of Terfenol-D samples, a giant magnetostrictive material. The gotten results show the very strong influence of the applied stress on the magnetic behaviour and on the magnetostriction strain of the material. A model of magneto-elastic coupling, based on the definition of thermodynamic coupling coeffcients, is proposed to describe the anhysteretic behaviour of the Terfenol-D. From the minimisation of funcional energy, finite element formulation of the magneto-elastic and electro-elastic problems are established. Specific considerations allow to establish finite element formulation of magneto-electric problem by coupling the two problems. Some applications are finally studied, especially magneto-electric composite structures associating magnetostrictive layers to piezoelectric layers. The survey of these composite structures shows the interest of a such association of active materials.
issued: 2026-05-07T02:24:38.740194
language: fr
modified: 2026-05-07T02:24:38.740200

Modelling and characterisation of smart materials for the design of magneto-electric devices
type: Distribution
access URL: https://theses.hal.science/tel-00274483
format: HTML
issued: 2026-05-07T02:24:38.745330
modified: 2026-05-07T02:24:38.721229