Skip to Main content Skip to Navigation
Theses

Décomposition de domaine et stratégies de relocalisation non-linéaire pour la simulation de grandes structures raidies avec flambage local

Abstract : The work focuses on the description and evaluation of strategies adapted to the simulation of large structures with unbalanced nonlinearities, such as local buckling in aeronautical structures. A so-called « nonlinear relocalization » strategy is presented, which enable the use of nonlinear schemes within substructures in the framework of classical domain decomposition methods. Two different types of boundary conditions are proposed to solve the resulting independent and local nonlinear problems. Results in terms of performance are presented on structures representative of the industrial cases. In a second part, a multiscale strategy based on micro/macro decomposition of interface fields is proposed for the solving of linearized equations obtained for plate and shell structures. Its application in a nonlinear framework is also presented, as well as research perspectives opened by this work.
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-00363656
Contributor : Ens Cachan Bibliothèque <>
Submitted on : Tuesday, February 24, 2009 - 10:11:21 AM
Last modification on : Thursday, December 10, 2020 - 10:53:43 AM
Long-term archiving on: : Tuesday, June 8, 2010 - 10:51:08 PM

Identifiers

  • HAL Id : tel-00363656, version 1

Citation

Philippe Cresta. Décomposition de domaine et stratégies de relocalisation non-linéaire pour la simulation de grandes structures raidies avec flambage local. Sciences de l'ingénieur [physics]. École normale supérieure de Cachan - ENS Cachan, 2008. Français. ⟨tel-00363656⟩

Share

Metrics

Record views

535

Files downloads

1627