The Proper Generalized Decomposition (PGD) as a numerical procedure to solve 3D cracked plates in linear elastic fracture mechanics - Archive ouverte HAL
Article Dans Une Revue International Journal of Solids and Structures Année : 2013

The Proper Generalized Decomposition (PGD) as a numerical procedure to solve 3D cracked plates in linear elastic fracture mechanics

Résumé

In this work, we present a new approach to solve linear elastic crack problems in plates using the so-called Proper Generalized Decomposition (PGD). In contrast to the standard FE method, the method enables to solve the crack problem in an efficient way by obtaining a single solution in which the Poisson's ratio v and the plate thickness B are non-fixed parameters. This permits to analyze the influence of v and B in the 3D solutions at roughly the cost of a series expansion of 2D analyses. Computationally, the PGD solution is less expensive than a full 3D standard FE analysis for typical discretizations used in practice to capture singularities in 3D crack problems. In order to verify the effectiveness of the proposed approach, the method is applied to cracked plates in mode I with a straight-through crack and a quarter-elliptical corner crack, validating J-integral results with different reference solutions.
  • A 3D crack problem is decomposed into 2D and 1D domains plus extra-coordinates.
  • The Poisson’s ratio and the plate thickness are considered as extra-coordinates.
  • A single solution solves for a given range of Poisson’s ratio and plate thickness.
  • The problem is solved at roughly the cost of a series expansion of 2D analyses.
  • Refined discretizations are affordable, capturing the corner singularity behavior.
  • Fichier principal
    Vignette du fichier
    GBRLFC.pdf (372.37 Ko) Télécharger le fichier
    Origine Fichiers produits par l'(les) auteur(s)
    Loading...

    Dates et versions

    hal-01007373 , version 1 (02-04-2017)

    Licence

    Domaine public

    Identifiants

    Citer

    Eugenio Giner, Brice Bognet, Juan Ródenas, Adrien Leygue, Javier Fuenmayor, et al.. The Proper Generalized Decomposition (PGD) as a numerical procedure to solve 3D cracked plates in linear elastic fracture mechanics. International Journal of Solids and Structures, 2013, 50 (10), pp.1710-1720. ⟨10.1016/j.ijsolstr.2013.01.039⟩. ⟨hal-01007373⟩
    220 Consultations
    389 Téléchargements

    Altmetric

    Partager

    More