Remapping-free variational h-adaption for strongly coupled thermo-mechanical problems - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Finite Elements in Analysis and Design Année : 2020

Remapping-free variational h-adaption for strongly coupled thermo-mechanical problems

Résumé

A mesh adaption approach for strongly coupled problems is proposed, based on a variational principle. The adaption technique relies on optimality properties of an energy-like potential and is hence free from error estimates and the associated computational cost. According to the saddle point nature of this variational principle, a staggered solution approach appears more natural and leads to separate the mesh adaption for the mechanical and the thermal fields. Using different meshes for different phenomena, precise solutions for the various fields under consideration are obtained. Mesh adaption steps (subdivision, merging) are local operations only, so that no complex remapping procedures are necessary to transfer internal variables. In practice, nearest-neighbor interpolations were used. The proposed method is shown to be cost effective with respect to a uniform mesh refinement. Some applications of the proposed approach are presented on various examples, including shear banding and friction welding.
Fichier principal
Vignette du fichier
articleHALversion.pdf (3.43 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02932403 , version 1 (07-09-2020)

Identifiants

Citer

Rohit Pethe, Thomas Heuzé, Laurent Stainier. Remapping-free variational h-adaption for strongly coupled thermo-mechanical problems. Finite Elements in Analysis and Design, 2020, 176, pp.103435. ⟨10.1016/j.finel.2020.103435⟩. ⟨hal-02932403⟩
43 Consultations
48 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More