A multi-level and parallel strategy for structural analysis - Laboratoire de mécanique et technologie Accéder directement au contenu
Communication Dans Un Congrès Année : 1997

A multi-level and parallel strategy for structural analysis

Résumé

In order to perform non-linear structural analysis on parallel architecture computers, with shared or distributed memory , an iterative approach related to domain decomposition methods has been designed. The studied structure is seen as the assembly of two mechanical entities: substructures and interfaces. The LArge Time INcrement method (LATIN) is then used to build an iterative algorithm, in order to solve the implicit structural problem concurrently [14]. As a first step, the implemented version is concerned here with linear elasticity, in which case our approach is similar to those proposed by [11], [16], [10]. Such a method is a "mixed" approach as both displacements and efforts are the unknowns. A general drawback of domain decomposition methods consists in the decrease of convergence when increasing the number of substructures. Using a global mechanism to propagate information among all the sub-structures can avoid this drawback [1]. This mechanism is now implemented on several domain decomposition-like algorithms, such as the FETI method, into which the rigid movement of substructures has to be introduced [8], [9]. We are proposing herein an extension to the previous LATIN algorithm that takes into account two scales introduced when decomposing the structure into substructures. The large scale problem is then used to build a global exchange of information and therefore to improve performance. Moreover, comparisons with different domain decomposition methods, and in particular with the variants of the FETI method, are proposed.
Fichier principal
Vignette du fichier
ddplcomplas97.pdf (357.66 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00321768 , version 1 (12-10-2020)

Identifiants

  • HAL Id : hal-00321768 , version 1

Citer

David Dureisseix, Pierre Ladevèze. A multi-level and parallel strategy for structural analysis. 5th International Conference on Computational Plasticity, Computational Plasticity - Fundamentals and Applications - COMPLAS V, Mar 1997, Barcelone, Spain. pp.1790-1797. ⟨hal-00321768⟩
79 Consultations
10 Téléchargements

Partager

Gmail Facebook X LinkedIn More